# Not a Topo vs onecrag

The clearest difference is ads: onecrag at none against Not a Topo's shown. onecrag also leads on update cadence (every 2 weeks vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Not a Topo sells 2 in-app purchases, starting at $2.49 per month and onecrag sells 44 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Not a Topo ships an update every 6 weeks, onecrag every 2 weeks. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Not a Topo | onecrag |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 98 MB | 89 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optimized Data Science](https://appshunter.io/developer/1523049904) | [Ivann, Pascal, Nikola MORICE](https://appshunter.io/developer/1741497477) |

## What reviewers say

### Not a Topo

[App page](https://appshunter.io/ios/app/not-a-topo/id1553844102)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.49 | per month |
| 7 day Not a Topo subscription | $5.99 | one-time |


### onecrag

[App page](https://appshunter.io/ios/app/onecrag/id6497794232)

This app helps climbers find and safely ascend their favorite climbing spots. It provides essential information for a secure and enjoyable climbing experience.

**Highlights:** Climbing safety guidance, Favorite spot identification, Secure ascent planning, Location-based climbing information

**Features:** macOS Compatibility

**In-app purchases (44)**

| Purchase | Price | Billing |
| --- | --- | --- |
| La Goulandière discount | $3.99 | one-time |
| Roche Brune discount | $3.99 | one-time |
| Le Coup de Sabre discount | $3.99 | one-time |
| Le Dé discount | $3.99 | one-time |
| Rocher de Label discount | $3.99 | one-time |
| Lesconil discount | $3.99 | one-time |
| Pen-Hir discount | $3.99 | one-time |
| Pen-Hir | $3.99 | one-time |
| Le Der discount | $3.99 | one-time |
| La Goulandière | $4.99 | one-time |
| Roche Brune | $4.99 | one-time |
| Le Coup de Sabre | $4.99 | one-time |
| Le Dé | $4.99 | one-time |
| Rocher de Label | $4.99 | one-time |
| Lescocil | $4.99 | one-time |
| Le Der | $4.99 | one-time |
| Le Grand Regarde discount | $5.99 | one-time |
| Le Mur du Temps discount | $5.99 | one-time |
| Le Grand Regarde | $6.99 | one-time |
| Le Mur du Temps | $6.99 | one-time |
| Le Mur de Satan discount | $7.99 | one-time |
| Le Pas de Lauzun discount | $7.99 | one-time |
| Le Rocher des Abeilles discount | $7.99 | one-time |
| Comboire discount | $7.99 | one-time |
| Lans-en-Vercors discount | $7.99 | one-time |
| La Graville discount | $7.99 | one-time |
| Les Rangs de Mars discount | $7.99 | one-time |
| Saint Guénolé discount | $7.99 | one-time |
| Primel discount | $7.99 | one-time |
| Les Goudes discount | $7.99 | one-time |
| Le Mur de Satan | $8.99 | one-time |
| Le Pas de Lauzun | $8.99 | one-time |
| Le Rocher des Abeilles | $8.99 | one-time |
| Comboire | $8.99 | one-time |
| Lans-en-Vercors | $8.99 | one-time |
| La Graville | $8.99 | one-time |
| Les Rangs de Mars | $8.99 | one-time |
| Saint Guénolé | $8.99 | one-time |
| Primel | $8.99 | one-time |
| Les Goudes | $8.99 | one-time |
| L'Aiguille de la Tour | $14.99 | one-time |
| L'Aiguille de la Tour discount | $14.99 | one-time |
| Surgy discount | $14.99 | one-time |
| Surgy | $17.99 | one-time |


## Frequently asked questions

### Is Not a Topo free?

Not a Topo is free to download, with in-app purchases available.

### Is onecrag free?

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

### Do Not a Topo or onecrag have ads?

Not a Topo shows ads; onecrag does not.

### Which is updated more often, Not a Topo or onecrag?

Not a Topo ships an update every 6 weeks, and onecrag every 2 weeks. Most recently, Not a Topo was updated on October 22, 2026 and onecrag on October 27, 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.*