# PiBase vs ODE

The clearest difference is update cadence: ODE at every 5 weeks against PiBase's every 6 months. PiBase's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PiBase ships an update every 6 months, ODE every 5 weeks. The most recent releases landed on September 13, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | PiBase | ODE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pibase-topology/id1612405297/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Ad-supported | — |
| Size | 36 MB | 41 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Felipe Cruz](https://appshunter.io/developer/1564637782) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### PiBase

[App page](https://appshunter.io/ios/app/pibase-topology/id1612405297)

This app serves as a community-driven database for topological counterexamples, theorems, and properties. It allows users to explore detailed descriptions, search for spaces satisfying specific logical formulas, and find references for mathematical concepts.

**Highlights:** Topological Spaces database, Topological Theorems database, Topological Properties database, Reference library, Search by logical formula, Counterexample exploration

**Features:** macOS Compatibility

**In-app purchases:** none


### ODE

[App page](https://appshunter.io/ios/app/ode-solver-integrator/id1619296705)

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

**In-app purchases:** none


## Frequently asked questions

### Is PiBase free?

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

### Is ODE free?

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

### Do PiBase or ODE have ads?

Both PiBase and ODE show ads.

### Which is updated more often, PiBase or ODE?

PiBase ships an update every 6 months, and ODE every 5 weeks. Most recently, PiBase was updated on September 13, 2026 and ODE on October 12, 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.*