# IPST Bio vs RESOLVE

The clearest difference is in-app purchases: IPST Bio at none against RESOLVE's 7. IPST Bio also leads on ads (none vs shown) and update cadence (monthly vs every 17 months). On price and device support there is nothing between them.

Both are free to download. RESOLVE sells 7 one-off in-app purchases. IPST Bio asks for nothing beyond the download.

IPST Bio ships an update monthly, RESOLVE every 17 months. The most recent releases landed on October 4, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | IPST Bio | RESOLVE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/resolve-a-math-game/id1517799128/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 17 months |
| Monetization | — | Free with in-app purchases |
| Size | 279 MB | 36 MB |
| Requires iOS | **6.0** | 12.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Institute for the Promotion of Teaching Science and Technology (IPST)](https://appshunter.io/developer/643591471) | [PLAYTOUCH](https://appshunter.io/developer/608330754) |

## What reviewers say

### IPST Bio

[App page](https://appshunter.io/ios/app/ipst-bio/id1169409440)

**Features:** macOS Compatibility

**In-app purchases:** none


### RESOLVE

[App page](https://appshunter.io/ios/app/resolve-a-math-game/id1517799128)

This game challenges players to solve math equations by linking numbers. It offers a quick and easy yet challenging experience for all skill levels. Test your math genius by completing equations with provided numbers.

**Highlights:** Solve math equations, Link numbers to complete equations, Challenging gameplay, Quick and easy to play, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 diamonds | $0.99 | one-time |
| Remove all ADS from the game | $1.99 | one-time |
| 300 diamonds | $1.99 | one-time |
| 550 diamonds | $3.99 | one-time |
| 1200 diamonds | $8.99 | one-time |
| 2500 diamonds | $17.99 | one-time |
| 4000 diamonds | $26.99 | one-time |


## Frequently asked questions

### Is IPST Bio free?

IPST Bio is free to download, with no in-app purchases.

### Is RESOLVE free?

RESOLVE is free to download, with in-app purchases available.

### Do IPST Bio or RESOLVE have ads?

RESOLVE shows ads; IPST Bio does not.

### Which is updated more often, IPST Bio or RESOLVE?

IPST Bio ships an update monthly, and RESOLVE every 17 months. Most recently, IPST Bio was updated on October 4, 2026 and RESOLVE on October 13, 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.*