# 解方程计算器 vs ODE Solver +

The clearest difference is in-app purchases: ODE Solver + at none against 解方程计算器's 4. ODE Solver + also leads on update cadence (weekly vs every 3 months). 解方程计算器's advantage is ads (none vs shown) and rating (3.9 vs 3.7). On price and device support there is nothing between them.

Both are free to download. 解方程计算器 sells 4 one-off in-app purchases. ODE Solver + asks for nothing beyond the download.

解方程计算器 holds the better App Store score, 3.9 against 3.7. Both are backed by a comparable volume of ratings — 14 and 3 respectively.

解方程计算器 ships an update every 3 months, ODE Solver + weekly. The most recent releases landed on August 5, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | 解方程计算器 | ODE Solver + |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (14 ratings)](https://appshunter.io/ios/app/id1512344352/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/ode-solver-plus/id1549447510/reviews) |
| Number of ratings | **14** | 3 |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 28 MB | 11 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [轶劼 薛](https://appshunter.io/developer/1509014172) | [Takahiko Nakade](https://appshunter.io/developer/1513184888) |

## What reviewers say

### 解方程计算器

[App page](https://appshunter.io/ios/app/id1512344352)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一个月 | $0.99 | one-time |
| 三个月 | $2.00 | one-time |
| 6个月 | $4.00 | one-time |
| 永久解锁 | $7.99 | one-time |


### ODE Solver +

[App page](https://appshunter.io/ios/app/ode-solver-plus/id1549447510)

This utility app calculates ordinary differential equations using the Runge-Kutta method. It offers a step width of 0.01 for its calculations.

**Highlights:** Ordinary differential equation calculation, Runge-Kutta method, Step width 0.01

**In-app purchases:** none


## Frequently asked questions

### Is 解方程计算器 free?

解方程计算器 is free to download, with in-app purchases available.

### Is ODE Solver + free?

ODE Solver + is free to download, with no in-app purchases.

### Which has better reviews, 解方程计算器 or ODE Solver +?

解方程计算器 is rated higher. 解方程计算器 averages 3.9 out of 5 from 14 ratings, while ODE Solver + averages 3.7 from 3 ratings.

### Do 解方程计算器 or ODE Solver + have ads?

ODE Solver + shows ads; 解方程计算器 does not.

### Which is updated more often, 解方程计算器 or ODE Solver +?

解方程计算器 ships an update every 3 months, and ODE Solver + weekly. Most recently, 解方程计算器 was updated on August 5, 2026 and ODE Solver + on September 25, 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.*