Comparison

Lumi Math Planet vs Flash Vocal

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Lumi Math Planet

Features
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Optimized for iPhone Duo. Built with the latest SDK, the app fills the entire inner display and automatically adjusts its layout whether the device is folded or open. Math before they can read: 46 picture-based question types, each one read aloud, from counting and addition to times tables, clocks and money. Get one right and a little planet lights up. Wrong answers get no buzzer, only gentle encouragement. Parents can follow progress across five skill areas, practice weak spots and print worksheets with answer keys. No ads, no subscription. A universe your child lights up with their own mind Lumi Math Planet turns math into a warm, cinematic space adventure. Solve a puzzle and a dark little planet flickers to life β€” buildings rise, auroras bloom, and an adorable space friend floats down to say hello. From Glimmer Planet all the way to the Boss Planet, every right answer makes the universe a little more beautiful. No failure. No buzzer. No shame β€” only gentle encouragement. So confidence grows on its own. Children ask to play it. That's the part that changes everything. Crafted to a standard you can feel Every planet has its own glowing personality. Every object is sculpted in warm, clay-style art. Every question is read aloud in a gentle, friendly voice. This isn't a worksheet with a cartoon stapled on top β€” it's a tiny world built with the kind of love you'd want a great teacher to have. Thinking, not just answers β€” contest-grade Most math apps drill speed. Lumi builds minds. Question types cover number patterns, logic, spatial reasoning, simple combinatorics and real word problems. Your child learns to think like a young mathematician, right at the kitchen table. So clear, a child plays before they can read Every single question is visual. Dice, ten-frames, number lines, growing rows, bar charts β€” abstract math becomes a picture you understand at a glance. No memorizing. No guessing. Just real number sense, discovered. From the very first number to contest-grade thinking Addition & subtraction past 100 (with regrouping), multiplication, division, number bonds, place value, comparing, patterns, odd/even, ordinals, time and money β€” 46 question types that level up automatically. Whether it's a pre-reader, a child just starting school, or anyone rebuilding their foundations, everyone begins right at their own level and climbs from there. Growth you can actually see The Parent Zone shows learning across five skill domains, spots weak areas, and opens one-tap focused practice. Export a printable worksheet and a learning report (print it or save a PDF) and carry every milestone with you. 44 interface languages Follows your device language automatically, or pick one in the app. The quiet luxuries No ads. Ever. No data collected β€” nothing ever leaves the device. No account, no login. Every outbound tap sits behind a parent gate. One promise, kept: a single one-time in-app purchase. No subscription, no nagging. Start without buying with your first planet and the daily challenge; unlock the whole galaxy whenever you're ready. Blast off β€” and watch your child build a universe that runs on what they just learned. Optimized for iPhone Duo.

About

Flash Vocal

Features
Read full description

Addition tables are practised out loud. A sum 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 on their fingers. A child who answers out loud, at a steady pace, has no time to count: they know. Flash Vocal β€” Addition 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 (0 to 5, then 6 to 10) so the child is never overloaded - A review of each table, then from +3 a cumulative review of the tables learned (+1 to +3, +1 to +4… up to +1 to +10): 38 steps - One-minute sessions: 1, 2 or 3 stars depending on the number of correct sums - A guided demo before the very first session: "2 + 1 = ?" 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 β€” the first tables, building numbers up to 10 - Ages 7 to 8 β€” every table up to +10, at speed - Remediation β€” filling a missing reflex, whatever the age - Teachers β€” up to 30 pupils tracked separately 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 your App Store account settings. 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 β€” 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. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://flashvocal.com/en/privacy

Screenshots

Lumi Math Planet4 screens
Flash Vocal4 screens

Verdict

The call

The clearest difference is update cadence: Lumi Math Planet at every 3 days against Flash Vocal's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Lumi Math Planet sells 1 one-off in-app purchase and Flash Vocal sells 8 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Lumi Math Planet ships an update every 3 days, Flash Vocal weekly. The most recent releases landed on October 30, 2026 and October 26, 2026 respectively.

Scorecard1 real difference Β· 5 level
Lumi Math Planet versus Flash Vocal: the parameters behind the verdict, then further details
ParameterLumi Math PlanetFlash Vocal
PriceFreeFree
Update frequencyEvery 3 days β€” betterWeekly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details β€” not scored
Size56 MB164 MB
Age rating4+4+
DeveloperGuan Feng LaiAKISTO Software

In-app purchases

1 purchases

Lumi Math Planet

One-time1
  • Unlock the Full Galaxy$4.99
8 purchases

Flash Vocal

Subscriptions8
  • Family – 1 month$3.991 Month
  • Education – 1 month$8.991 Month
  • Family – 3 months$8.993 Months
Show 5 more
  • Family – 6 months$14.996 Months
  • Education – 3 months$22.993 Months
  • Family – 1 year$22.991 Year
  • Education – 6 months$34.996 Months
  • Education – 1 year$49.991 Year

Questions

Is Lumi Math Planet free?
Lumi Math Planet is free to download, with in-app purchases available.
Is Flash Vocal free?
Flash Vocal is free to download, with in-app purchases available.
Do Lumi Math Planet or Flash Vocal have ads?
Neither Lumi Math Planet nor Flash Vocal shows ads.
Which is updated more often, Lumi Math Planet or Flash Vocal?
Lumi Math Planet ships an update every 3 days, and Flash Vocal weekly. Most recently, Lumi Math Planet was updated on October 30, 2026 and Flash Vocal on October 26, 2026.

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