# ODE Solver vs Trigonometry Identities Proofs

The clearest difference is update cadence: ODE Solver at every 8 months against Trigonometry Identities Proofs's every 32 months. Trigonometry Identities Proofs's advantage is price ($0.99 vs $2.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ODE Solver costs $2.99 and Trigonometry Identities Proofs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ODE Solver ships an update every 8 months, Trigonometry Identities Proofs every 32 months. The most recent releases landed on September 17, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | ODE Solver | Trigonometry Identities Proofs |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-identities-proofs/id1547838514/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 32 months |
| Monetization | — | Paid |
| Size | 4 MB | 18 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI](https://appshunter.io/developer/914295588) | [H3 Apps, LLC](https://appshunter.io/developer/598620927) |

## What reviewers say

### ODE Solver

[App page](https://appshunter.io/ios/app/ode-solver/id982923512)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Trigonometry Identities Proofs

[App page](https://appshunter.io/ios/app/trigonometry-identities-proofs/id1547838514)

Learn and practice trigonometric identity proofs with step-by-step solutions. Compare your work to the app's detailed explanations, revealing each step individually.

**Highlights:** 42 trigonometric identity proofs, Step-by-step solution reveal, Compare your work to app solutions, Practice trigonometry, Educational math tool

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ODE Solver free?

ODE Solver costs $2.99, with no in-app purchases.

### Is Trigonometry Identities Proofs free?

Trigonometry Identities Proofs costs $0.99, with no in-app purchases.

### Do ODE Solver or Trigonometry Identities Proofs have ads?

Neither ODE Solver nor Trigonometry Identities Proofs shows ads.

### Which is updated more often, ODE Solver or Trigonometry Identities Proofs?

ODE Solver ships an update every 8 months, and Trigonometry Identities Proofs every 32 months. Most recently, ODE Solver was updated on September 17, 2026 and Trigonometry Identities Proofs on August 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*