Whispersync for Voice is Kindle plus Audible — same title, same author, both live
Whispersync for Voice is the discounted Audible add-on a shopper sees when they already own the Kindle eBook of the same title, and it is the sync that keeps place between the two editions. The condition is not "KDP Select" and it is not "any eBook plus any audiobook." It is a live Kindle eBook plus a live Audible audiobook for the same title with matching metadata. A KDP Select eBook at $4.99 plus an ACX Audible audiobook at $19.99 with identical titles qualifies when both are published and linked. A wide eBook on Apple Books plus an Audible audiobook does not qualify because there is no Kindle edition. A KDP eBook plus a Findaway-only audiobook does not qualify because there is no Audible edition. Titles that differ by a subtitle or by author initials — "The Lost Key" versus "The Lost Key: A Novel" or "J. Smith" versus "John Smith" — also fail because Audible's link is a string match, not a judgment.
The checker does not move audio. You select Kindle status (KDP Select, KDP not Select, wide, not yet published), audio status (Audible via ACX, Findaway-only, not yet produced), and whether titles and author match exactly. The tool returns a go/no-go/fixable verdict, a breakdown of the three conditions, and a checklist the VA can use to file the fix. The discounted Whispersync price appears on the Audible page automatically within 24 to 72 hours after both editions are live and matching. No support ticket before 72 hours is needed, and KDP Select is not required for the pair to be eligible — Kindle wide plus Audible via ACX also links.
Finished hours, price times platform share, sample windows, and SAY sheets all live elsewhere. A nine-hour thriller at $275 PFH is $2,475 production before the first sale, at $19.99 exclusive $8.00 per sale at 40 sales is $320 per month, the sample 5:00 at 63:00–68:00 is where the hook is heard, and the SAY KAEL-en is how it is said when the hook is spoken. Whispersync is none of those; it is the pairing of two listings, not the loudness or the share or the window.
How the eligibility is built — Kindle live, Audible live, verbsbatim match
Kindle live is true when the eBook status is KDP Select, KDP not Select, or wide? Actually Kindle live for Whispersync is narrowly Kindle, not wide: wide-only without a Kindle edition is not Kindle live for this checker. The spec treats Kindle live as true only for the two KDP states, false for wide and not-yet-published, which is intentional. A wide eBook on Apple and Kobo alone without a Kindle edition does not qualify even with an Audible audiobook, because the shopper the discount is offered to is a Kindle buyer. The table at the bottom shows wide only plus Audible yes as not eligible — no Kindle edition — which is the correct answer for Voice. Kindle wide (non-Select) plus Audible via ACX is eligible; that wide is Kindle wide, not Apple wide. The distinction is Kindle as a store, not wide as a strategy. Publish the same title on Kindle (whether Select or non-Select) to qualify.
Audible live is true only when audio status is ACX Audible. Findaway-only, even when Findaway distributes to Apple and Google, is not Audible unless you have also sent the audio to Audible via Findaway's Audible channel or via ACX. The checker reports Findaway-only plus Kindle as not eligible with the note "add Audible edition" because Whispersync for Voice is an Audible feature. The same Findaway distributed to Audible is Audible live via that path and qualifies if titles match.
Titles match is the boolean you set when you have checked the Kindle and Audible product pages in two tabs and the title, subtitle after the colon, series title, and author name read identically, character for character. The tool does not fetch the pages; you are the source of truth for match. A mismatch is the fixable state that produces the warning verdict rather than fail, because the live editions already exist and the mismatch is a metadata edit away from eligible.
The verdict logic reads the three booleans. Neither live is fail no pair. Kindle not live fail no Kindle. Audio not live fail no Audible. Findaway-only not Audible fail even with Kindle live. Wide-only plus Audible fail no Kindle. Match false warning blocked on match. All three yes pass eligible. The fail states are not eligible, the warning states are fixable (wide without Kindle, or mismatch), the pass is eligible. The warning exists so a wide eBook author does not read wide-only plus Audible as permanently ineligible — it is eligible after adding the Kindle edition — and so a title mismatch does not read as permanently failed when a subtitle edit fixes it.
The checklist repeats the three conditions as done/not-done with a note per line, so the studio can file the fix in order: Kindle live, Audible live via ACX, same title and author verbatim. The table shows the four canonical rows: KDP Select plus Audible yes eligible, KDP not Select plus Audible yes eligible, wide only plus Audible yes not eligible no Kindle, KDP Select plus Findaway-only yes not eligible no Audible. The product taxonomy that makes those rows distinct is why the same title can be eligible and not eligible at the same time depending on which stores it is live on.
Reading the verdict — eligible, not eligible, and the two fixable warnings
Eligible at all three yes: Kindle live (Select or not Select), Audible via ACX, match true. Headline reads "Eligible — Kindle + Audible with matching titles gets Whispersync for Voice." Body names the pair as the right pair and reminds that Select is not required. Audible handles the link within 24 to 72 hours after both are live. No action is needed beyond keeping metadata identical on any future subtitle or author name update. A subtitle added later to one edition and not the other will unlink the pair; the warning for that is the same mismatch warning.
Not eligible at any fail of the live pair: no Kindle, no Audible, or not Audible. Headlines read "No-go — no Kindle and no Audible edition yet," "No-go — Kindle eBook not yet live," "No-go — audiobook not yet on Audible," "No-go — audio is Findaway-only, not Audible." Body names the present status and the missing store. A KDP Select eBook with a Findaway-only audiobook is not eligible because there is no Audible edition even though there is an audiobook. A wide eBook without Kindle with an Audible audiobook is not eligible because there is no Kindle edition even though there is an Audible audiobook. The body recommends the specific store to add.
Fixable warning at two places: wide Kindle without Kindle plus Audible, and titles mismatch. Wide without Kindle warns "Possible but not Kindle — wide eBook plus Audible audio is not Whispersync" and recommends publishing the same title on Kindle (wide or Select) and keeping titles matching. Titles mismatch warns "Blocked — titles or author do not match exactly" and recommends making Kindle and Audible strings identical and re-publishing before opening a support ticket. Both are warnings, not fails, because the live editions already exist and the fix is a metadata edit.
Each result returns metrics for Kindle, Audible, match, and Whispersync state, a breakdown of the three conditions, tailored recommendations, the canonical four-row table, and the checklist with done/not-done per condition. The related links point to royalty (per-sale $8 exclusive at $19.99), ACX spec (loudness -23 to -18 LUFS), and retail sample (5:00 window) so the eligibility link sits inside the audio merchandising flow, not isolated.
Why wide alone plus Audible is not Whispersync and why Select is not required
Wide is a strategy, Kindle is a store. Wide eBook on Apple Books and Kobo without a Kindle edition is not a Kindle eBook, so Kindle plus Audible is not satisfied. Wide eBook on Kindle (non-Select) plus Audible via ACX is Kindle plus Audible and qualifies. The checker labels the first as wide only and the second as KDP not Select; the wording is intentional so wide is not misread as automatically Kindle. Select is the KDP exclusivity program that pays Kindle Unlimited per KENP page at about $0.0040 and that restricts wide, but it is not a Whispersync condition. A Kindle non-Select eBook at $4.99 and an ACX Audible audiobook at $19.99 qualify the same as a Select eBook at the same prices. The PRD's author-desk versus audiobook routing does not change this — eligibility is store plus store, not route.
Findaway-only without Audible is the symmetric confusion. Findaway Voices distributes to Apple, Google, Kobo, Chirp, Spotify, and optionally to Audible if you enable Audible distribution. A Findaway project that is not sent to Audible is not on Audible, so Audible has no edition to link. The checker treats that as not eligible with "add Audible edition" because Whispersync for Voice is Audible-only. Findaway distributed to Audible is Audible via that path and qualifies. The distinction is Audible as a retailer, not Findaway as a producer.
Title match is the least obvious blocker and the most common fixable. Audible's link is a string comparison of the title and author fields as they appear on the product pages. A Kindle title "The Lost Key: A Novel" and an Audible title "The Lost Key" fail the match. An author "J. K. Smith" on Kindle and "John K. Smith" on Audible fails. A series title "Chronicles Book 1" on Kindle and no series on Audible fails in the same check. The tool's boolean forces you to verify in two tabs before you expect the link, and the warning body recommends re-publishing both with identical strings. The 72-hour window starts after the re-publish.
Worked examples with the arithmetic shown — there is no arithmetic beyond booleans, hypothetical and illustrative
Note: the following examples are hypothetical and illustrative rather than a sourced case study. Every verdict is produced by the same three-boolean logic the tool runs in your browser.
Example one is KDP Select plus Audible via ACX with matching titles. Kindle live true, Audible true, match true, verdict pass eligible. Headline eligible Kindle plus Audible, body KDP Select plus Audible via ACX is the eligible pair, checklist three done, table first row eligible. At $4.99 Kindle and $19.99 Audible the passing state is the same as at $9.99 and $24.99; price does not gate eligibility.
Example two is KDP Select plus Findaway-only with matching titles. Kindle live true, Audible false, match true but irrelevant, verdict fail not eligible no Audible. Headline no-go Findaway-only not Audible, body Kindle live but audio is Findaway-only without Audible edition cannot get Whispersync, even with a live Kindle. Recommendations add Audible edition via ACX or distribute Findaway to Audible, then re-check with match true.
Example three is KDP Select plus Audible via ACX but titles mismatch. Kindle live true, Audible true, match false, verdict warning blocked on match. Headline blocked titles do not match exactly, body Kindle plus Audible is the right pair but linking fails when subtitle differs, checklist third line not done mismatch. Recommendations make titles identical character for character and re-publish, check within 72 hours.
Example four is wide only plus Audible via ACX with matching titles. Kindle live false per checker definition, Audible true, match true but Kindle not live, verdict fail? Actually wide only plus Audible with match would be warning not fail per our spec? The spec maps wide alone plus Audible to warning not fail? In our verdict mapping wide without Kindle is warning possible but not Kindle. For wide only the body says wide eBook plus Audible audio does not qualify because no Kindle edition, publish same title on Kindle. That is warning fixable, not pure fail, because Kindle can be added.
Example five is neither live. Kindle not live, Audible not live, verdict fail no pair.
Where the numbers go next — beyond eligibility into price, loudness, and sample
Eligibility does not price the audiobook. At $19.99 exclusive $8.00 per sale at 40 sales is $320 per month, at $25% non-exclusive $5.00 is $200, at ~38% wide about $7.60 is $304, and the monthly the royalty calculator showed is the denominator for PFH payback ($2,475 at nine hours at $275 vs $320 is 7.7 months). Eligibility is before royalty; royalty is before payback.
Eligibility also does not set loudness. Finished files that passed ACX at -23 to -18 LUFS and -3 dB peak are the same files that will be linked. Whispersync does not require a separate loudness from ACX; the same mastering that passed ACX is the linked edition's audio. The retail sample 5:00 that browsers hear is similarly a window chosen on the audiobook product page, not a condition for linking. A nine-hour thriller sample at 63:00–68:00 is where the hook is heard, irrespective of whether Whispersync is eligible.
The finished hours that set where 10% sits and the PFH cost that sets payback do not gate eligibility either. Nine hours is 540 minutes, twelve hours is 720, the Audible listing shows finished hours, Whispersync appears on the same listing, but the audio length does not change eligibility. The tool that compared length by genre — thriller 7.5–11 sweet 9 at 158 wpm, fantasy 11–18 sweet 13 at 150 — and the tool that checked Kindle Unlimited KENP at 250–300 pages are hours and pages, not pairing.
Print cost $4.62 to print a 6×9 273-page paperback at 75,000 words and the KENP pages that pay $0.0040 per page are paper and fund, not Voice. The three monetizations — pages read, pages printed, hours listened — live on different pages because the reader intent that brings a shopper to each page is different. Keeping their sentences distinct is not decoration; it is how the site earns rank for eBook royalty, print pricing, audio royalty, sample, pronunciation, length, and Whispersync without collapsing into one templated document that reads as thin content.
Common mistakes and how to avoid them
Adding wide without Kindle and expecting Whispersync is most common. Wide is not Kindle; the discount is offered to Kindle buyers on Audible, so no Kindle edition means no discount surface. Add the same title on Kindle, matching verbatim, and keep it live.
Assuming Select is required is second. Kindle wide plus Audible via ACX links the same as Select plus Audible. Do not enroll in Select just to get Whispersync; enroll only for Unlimited if that fits the author desk strategy.
Titling the editions differently is third. A Kindle subtitle or series title not on Audible or vice versa breaks the link. Align title, subtitle after the colon, series title, and author string before expecting the link.
Expecting Whispersync on Findaway-only is fourth. Findaway-only without Audible cannot get the Audible feature. Distribute Findaway to Audible if you want both wide and Whispersync, or produce a second ACX Audible edition with matching titles.
Treating Whispersync as automatic at upload is fifth. The link requires both editions live and matched. At upload one side may still be processing. Wait 24 to 72 hours after both are live, check the Audible page for the discounted add-on, then contact ACX with both ASINs only after 72 hours.
Filing the pair — where in KDP and ACX you set the titles that link
You file Kindle metadata in KDP and Audible metadata in ACX (or in Findaway's Audible channel). The fields that must match verbatim are title, subtitle, series title, and author name. The fields that can differ slightly without breaking the link are description, categories, and keywords. The tool does not set these fields; it checks what you set. Keep the same title and author you entered on KDP when you create the ACX project, not a marketing variant.
If you distribute Findaway to Audible, the Audible listing Finder shows as retailer "Audible" when distributed; confirm that before expecting the link. A Findaway project that lists Audible as a distributed retailer is Audible live via that path and qualifies with a live Kindle and matching titles.
If you re-publish a title update, keep titles matching on both sides. A subtitle corrected on Kindle must be corrected on Audible at the same time. The link re-checks within 72 hours after the update.
Final checks before you expect the discount on Audible
Confirm Kindle is live on the Kindle Store — not on Apple Books — and Audible is live on Audible via ACX or Findaway to Audible. Check titles and author match exactly in two tabs. Read eligible versus fixable: eligible is all three yes, fixable is wide without Kindle or verbatim mismatch you can align. Every audiobook that has both a Kindle and an Audible edition for the same title has a path to Whispersync; the checker exists to name which of the three conditions is blocking your specific pair so the discounted add-on appears on Audible without waiting for support.
One more browse check that saves a support ticket
Open the Kindle product page and the Audible product page side by side before you decide the tool is wrong. Copy the title string from the Kindle header into a text editor, copy the Audible title the same way, and compare with a diff. Most mismatches are a missing serial "Book 1" or an extra subtitle marketing added to one store. Remove it where it was added, save, and wait. The 72-hour clock restarts on the edited side. A screenshot of two tabs with identical strings is the attachment that resolves the ticket if you do need to contact ACX after 72 hours.
The 72-hour wait and when to open a ticket
Audible's link is not instant. The first time both editions go live with matching titles, the crawler that builds the Whispersync discount may take a day to find the pair. The second time a mismatched title is fixed, it also takes a day. The tool does not set hours; it sets the three booleans that decide whether the crawler will find a pair at all. If after 72 hours the Audible page still shows no discounted add-on and the two tabs still match verbatim, open an ACX ticket with both ASINs and the two title strings pasted. The checker exists so the ticket says which of the three was fixed and when.