# OPBMS vs Tribe Building Mastermind

The clearest difference is in-app purchases: OPBMS at none against Tribe Building Mastermind's 2. OPBMS also leads on update cadence (every 4 months vs every 8 months) and iOS requirement (13.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Tribe Building Mastermind sells 2 one-off in-app purchases. OPBMS asks for nothing beyond the download.

OPBMS ships an update every 4 months, Tribe Building Mastermind every 8 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | OPBMS | Tribe Building Mastermind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/opbms/id1475282009/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 8 months |
| Monetization | Free | — |
| Size | 11 MB | 85 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Gaurav Rana](https://appshunter.io/developer/1325473039) | [TagMango Inc](https://appshunter.io/developer/1611765353) |

## What reviewers say

### OPBMS

[App page](https://appshunter.io/ios/app/opbms/id1475282009)

This app connects parents, teachers, and schools on a single platform. It facilitates paperless communication, homework assignments, and online fee payments, helping parents manage their child's education and stay updated on school activities.

**Highlights:** Paperless communication, Direct homework assignment, Online fee payments, School event updates, Academic information access, Child's education management

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

**In-app purchases:** none


### Tribe Building Mastermind

[App page](https://appshunter.io/ios/app/tribe-building-mastermind/id6498631730)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tribe Building Gold Membership | $199.99 | one-time |
| Diamond Membership | $199.99 | one-time |


## Frequently asked questions

### Is OPBMS free?

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

### Is Tribe Building Mastermind free?

Tribe Building Mastermind is free to download, with in-app purchases available.

### Do OPBMS or Tribe Building Mastermind have ads?

Neither OPBMS nor Tribe Building Mastermind shows ads.

### Which is updated more often, OPBMS or Tribe Building Mastermind?

OPBMS ships an update every 4 months, and Tribe Building Mastermind every 8 months. Most recently, OPBMS was updated on October 24, 2026 and Tribe Building Mastermind on October 24, 2026.

---

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