Flash Vocal — Subtraction

LiveAKISTO-SOFTWARE6 apps · 2 installsEducationFreecom.akisto.flashvocal.subtraction

Subtraction tables out loud. The app listens and validates. Works 100% offline.

Total installs
0
exact · Play shows 0+
Installs / day
—
measured after our second crawl (about a day)
Rating
—★
— ratings · — reviews
Released
14 Sept 2026
31d ago
Last update
14 Sept 2026
v1.0.0 · 30d ago
Countries
—
not checked yet

Installs per day

gain of the exact counter
Not enough history yet — check back tomorrow

Daily tracking since 13 Oct 2026 · history grows every day

Install history

exact counter from Google Play
Not enough history yet — check back tomorrow

Daily tracking since 13 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

Data safety

declared by the developer on Google Play
  • No data shared with third parties
  • No data collected
  • Follows the Play Families Policy

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

14 in 4 groups
6 Sensitive3 Notable5 Routine

What this app can do with your phone

  • Record sound using your phone's microphone
  • Read photos, videos, and other files saved in your phone's shared storage
  • Add, change or delete photos, videos and other files in your phone's storage
  • Show its own windows or bubbles on top of other apps you are using
Photos/Media/FilesSensitive2

Access to photos, videos, music and other files stored on your device

  • Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
  • Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE
StorageSensitive2

Access to files, photos and media saved on your phone's storage

  • Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
  • Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE
MicrophoneSensitive1

Access to your phone's microphone to record sound

  • Record sound using your phone's microphonerecord audio · RECORD_AUDIO
OtherSensitive9

Access to miscellaneous device features that don't fit other categories

  • Show its own windows or bubbles on top of other apps you are usingdraw over other apps · SYSTEM_ALERT_WINDOW
  • Change volume and choose which speaker or headset plays soundchange your audio settings · MODIFY_AUDIO_SETTINGS
  • Start itself automatically as soon as your phone finishes turning onrun at startup · RECEIVE_BOOT_COMPLETED
  • Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
  • Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
  • Connect to the internet to load content and send datafull network access · INTERNET
  • Make your phone vibratecontrol vibration · VIBRATE
  • Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE
  • Receive push messages sent from the app's servers over the internetreceive data from Internet · com.google.android.c2dm.permission.RECEIVE

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description
Subtraction tables are practised out loud. A subtraction appears, the child says the answer, the app listens and validates. Table after table, the answer becomes a reflex. A child who taps a digit can count back on their fingers. A child who answers out loud, at a steady pace, has no time to count back: they know. Flash Vocal — Subtraction only validates an answer that is genuinely spoken, something no multiple-choice exercise can check. A path of 38 steps • All 10 tables, from −1 to −10, each split in two halves (answers 0 to 5, then 6 to 10) so the child is never overloaded • Never a negative answer: every subtraction from 1 − 1 to 20 − 10, with an answer between 0 and 10 • A review of each table, then cumulative reviews mixing every table learned so far: −1 to −3, −1 to −4… up to −1 to −10 • One-minute sessions: 1, 2 or 3 stars depending on the number of correct answers • A guided demo before the very first session: "5 − 2 = ?" What you follow • Result screen: a pace indicator (animals, bikes or racing cars, the child's choice) and how the child felt about the session • Statistics per table and per session, with the reaction and pronunciation time of every answer • Optional daily reminder, which only fires on days without a session Who it is for • Ages 6 — the first tables: taking away 1, 2 or 3 without counting back • Ages 7 to 8 — every table up to −10, crossing ten, at speed • Remediation — filling a missing reflex, whatever the age • Teachers — up to 30 pupils tracked separately The natural companion to Flash Vocal — Addition: the same tables, in the same order, read backwards. Free and subscription Tables −1, −2, −3 and the first half of −4 are available without a subscription, with no time limit and no cap on sessions, for one profile. The subscription opens the whole path and several profiles. Family (3 profiles) and Education (30 profiles) plans, for 1 month, 3 months, 6 months or 1 year. Auto-renewable, cancel anytime in Google Play. Privacy Speech recognition runs entirely on the device. No speech is ever transmitted, no recording is kept. The app works 100% offline, with no ads, no account and no tracking. Only anonymous crash reports are sent in case of a failure, to fix bugs — never any personal or voice data. Available in English, French, German, Spanish, Italian, Portuguese, Dutch, Polish, Czech, Turkish, Catalan, Ukrainian and Russian: the app speaks the device's language. French is built in; the other voices download once, then everything works offline. Privacy Policy: https://flashvocal.com/en/privacy

What's new

First release of Flash Vocal — Subtraction: all 10 subtraction tables in 38 steps with review steps, 100% offline speech recognition (EN, FR, DE, ES, IT, PT, NL, PL, CS, TR, CA, UK, RU, JA, VI, ZH), mastery stars, pace indicator, statistics per table, several profiles with the Family or Education subscription. Tables −1, −2, −3 and half of −4 are free, with no time limit.

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