Comparison

PolyDigits vs Trig Solver

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

Head to head
About

PolyDigits

Features
Read full description

PolyDigits — Master numbers in any language Numbers are the fastest way to feel confident in a language: prices, times, addresses, quantities. PolyDigits trains exactly that — with active drills instead of passive studying. Three ways to practice: • Listen/Drill: Hear a number → type it → check instantly. • Flash Mode: Reveal and listen when you’re ready. • Math: Train mental math and automate number fluency along the way. Why it works • Authentic pronunciation: Uses your iPhone’s native text-to-speech voice. • Focused & simple: No fluff — just training. • Progress you can see: Track what you’ve done each day. Completely free No ads. No locked features. If you want, you can buy me a coffee :) Private: no accounts, no data sharing (everything stays on-device).

About

Trig Solver

Features
Read full description

Trigonify brings the core tools for learning trigonometry into one focused, visual workspace. Solve a triangle, explore the unit circle, graph a function, review formulas, and practice the ideas behind each answer—without creating an account or seeing ads. SOLVE WITH STEPS • Solve right triangles with SOHCAHTOA and the Pythagorean theorem • Find missing sides and angles with clear worked steps • Use inverse sine, cosine, and tangent with domain guidance • Switch between degrees, radians, gradians, and DMS • Save solutions and return to them later SEE HOW TRIG FITS TOGETHER • Drag around an interactive unit circle • View exact values, quadrants, and reference angles • Graph sine, cosine, and tangent with live controls for amplitude, period, phase, and vertical shift • Link a moving unit-circle point to its waveform in the phase-shift playground STUDY AND PRACTICE • Search a structured trigonometry formula reference • Favorite the identities you use most • Practice by topic, review mistakes, and track streaks and accuracy • Use Exam Mode to hide solvers and answers while keeping reference tools available BUILT FOR REAL STUDY • No account required • No advertising • Light, dark, high-contrast, and reduced-motion options • iPhone and iPad support • Local app settings, favorites, history, and practice progress Trigonify is an educational calculator and study aid. Check results before using them for exams, grading, engineering, construction, financial, or safety-critical work. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PolyDigits4 screens
Trig Solver4 screens

Verdict

The call

The clearest difference is iOS requirement: Trig Solver at 16.4 against PolyDigits's 26. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PolyDigits sells 4 in-app purchases, starting at $1.99 per month and Trig Solver sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 5 level
PolyDigits versus Trig Solver: the parameters behind the verdict, then further details
ParameterPolyDigitsTrig Solver
PriceFreeFree
Update frequencyEvery 5 days—
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad — better
Requires iOS2616.4 — better
Further details — not scored
Size4 MB54 MB
Age rating4+12+
DeveloperDaniel KwetschasMobin Akhter

In-app purchases

4 purchases

PolyDigits

Subscriptions1
  • Coffee Subscription$1.991 Month
One-time3
  • Small Coffee$2.99
  • Medium Coffee$3.99
  • Large Coffee$5.99
3 purchases

Trig Solver

Subscriptions2
  • Trigonify Pro Weekly$4.997 Days
  • Trigonify Pro Yearly$34.991 Year
One-time1
  • Trigonify Pro Lifetime$69.99

Questions

Is PolyDigits free?
PolyDigits is free to download, with in-app purchases available.
Is Trig Solver free?
Trig Solver is free to download, with in-app purchases available.
Do PolyDigits or Trig Solver have ads?
Neither PolyDigits nor Trig Solver shows ads.

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