Comparison

Least Common Multiple Solver vs SpeakSignal

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

Head to head
About

Least Common Multiple Solver

Features
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Finish your homework instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your numbers and calculate the Least Common Multiple (LCM). HOW IT WORKS Enter your numbers into the appropriate fields and get started. You'll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don't need it. Only anonymous data is collected, for example: - which features are used - how many solutions are generated This helps us improve the app. It is not possible to identify you from this data. COSTS Everything can be used for free. Access your solutions 24/7. Every solution always includes all calculation steps. If you need a large number of solutions in a short time, various purchase options are available. EXTRAS - Prime Factorization - Using Multiples - Curated learning videos - Feedback for incorrect input - Manage your own solutions - App introduction CONTACT Questions and feedback are always welcome via Discord or directly in the app review.

About

SpeakSignal

Read full description

Practice American English on your iPhone, with on-device sound checks and no account. Choose one sound group from the Sound to practice dropdown. The 20 American English groups include TH, V / F, L vs R, American R, Pete / pit / pet / Pat / pot, food / foot, Schwa / cup, and SH / CH. Each group explains whether it is Checked by the model or Partly checked. Pick a topic and an Easy, Medium, or Hard level. Medium is the starting level. Generated and library sentences include your chosen sound. You can also choose Your own and type or paste an English passage of up to 80 words and 800 characters; words outside the dictionary are listed as not checked. Listen to the example, then record a take of up to 120 seconds. The result card starts with a verdict for your chosen sound group. Also heard lists every other sound difference the model reported. On the Sounds heard line, differing symbols are red and underlined. Full report: all sounds and mismatches opens automatically, with one line per word that needs review, expected and heard sounds, and question marks for sounds the model could not judge clearly. These are model estimates. The app can miss or mishear sounds, and some groups are only partly checked. It is a practice tool, not a pronunciation certification or a guarantee of error detection. Practice works offline with the bundled sound model and sentence library. No account, subscription, or developer API key is needed. Audio is processed on your iPhone and is not uploaded or saved as recordings. Recent practice stays on your phone and can be deleted in Settings. History from the previous sound engine does not contribute to new pattern feedback. Fresh AI sentences require a compatible iPhone with iOS 26 or later, Apple Intelligence enabled, and its on-device model ready. Initial Apple model and voice downloads can require internet access. The library remains available when AI generation is unavailable. Listen uses an installed American English system voice. A Premium voice is optional and can be downloaded in iPhone Settings.

Screenshots

Least Common Multiple Solver4 screens
SpeakSignal4 screens

Verdict

The call

The clearest difference is in-app purchases: SpeakSignal at none against Least Common Multiple Solver's 7. SpeakSignal also leads on update cadence (every 2 days vs every 11 days). Least Common Multiple Solver's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Least Common Multiple Solver sells 7 one-off in-app purchases. SpeakSignal asks for nothing beyond the download.

UpkeepUpdate frequency

Least Common Multiple Solver ships an update every 11 days, SpeakSignal every 2 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

Scorecard4 real differences ยท 2 level
Least Common Multiple Solver versus SpeakSignal: the parameters behind the verdict, then further details
ParameterLeast Common Multiple SolverSpeakSignal
PriceFreeFree
Update frequencyEvery 11 daysEvery 2 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.0 โ€” better17.0
Further details โ€” not scored
Size179 MB373 MB
Age rating4+4+
DeveloperGlindemann, Sennoun, Langer GbRMarbatis Systems LLC

In-app purchases

7 purchases

Least Common Multiple Solver

One-time7
  • +30 User Tokens$0.29
  • +1 Convenience Token / 6h, max. +2$0.59
  • +150 User Tokens$0.99
Show 4 more
  • +2 Convenience Tokens / 6h, max. +4$0.99
  • +300 User Tokens$1.49
  • +4 Convenience Tokens / 6h, max. +8$1.59
  • Lifetime Access$1.99
None

SpeakSignal

No in-app purchases

Questions

Is Least Common Multiple Solver free?
Least Common Multiple Solver is free to download, with in-app purchases available.
Is SpeakSignal free?
SpeakSignal is free to download, with no in-app purchases.
Do Least Common Multiple Solver or SpeakSignal have ads?
Neither Least Common Multiple Solver nor SpeakSignal shows ads.
Which is updated more often, Least Common Multiple Solver or SpeakSignal?
Least Common Multiple Solver ships an update every 11 days, and SpeakSignal every 2 days. Most recently, Least Common Multiple Solver was updated on November 2, 2026 and SpeakSignal on November 6, 2026.

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