# Sibme vs NCTM Central

The clearest difference is review sentiment: Sibme at 65% against NCTM Central's 0%. Sibme also leads on rating (5.0 vs 3.0) and update cadence (every 2 weeks vs every 2 months). NCTM Central's advantage is ratings volume (16 vs 5) and iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Sibme holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 5 and 16 respectively. Written reviews point the same way: 65% of Sibme's written reviews are positive against 0% of NCTM Central's.

Sibme ships an update every 2 weeks, NCTM Central every 2 months. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sibme | NCTM Central |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/sibme/id629939151/reviews)** | [3.0 (16 ratings)](https://appshunter.io/ios/app/nctm-central/id1457158930/reviews) |
| Number of ratings | 5 | **16** |
| Positive reviews | **65.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 219 MB | 37 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Dos Terra LLC](https://appshunter.io/developer/629939154) | [National Council of Teachers of Mathematics](https://appshunter.io/developer/368205972) |

## What reviewers say

### Sibme

[App page](https://appshunter.io/ios/app/sibme/id629939151)

This app uses AI to help educators improve their teaching practices. It offers tools for lesson planning, feedback generation, and analysis of recorded lessons. Educators can also record, review, and share content with colleagues for collaborative feedback.

**Highlights:** AI Copilot for lesson planning and feedback, Generative AI tools for educators, AI-driven teaching practice analysis, Video and audio recording for reflection, Automatic transcription of recordings, Time-stamped annotations for feedback, Resource sharing with time-stamps

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

**In-app purchases:** none


### NCTM Central

[App page](https://appshunter.io/ios/app/nctm-central/id1457158930)

This app provides math educators with resources and information for professional development. Access details on conferences, connect with peers, and manage event schedules. It supports high-quality mathematics teaching and learning for all students.

**Highlights:** Conference and event information, Speaker and exhibitor details, In-app messaging for attendees, Session reminders and alerts, Note-taking for event sessions, Social media integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sibme free?

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

### Is NCTM Central free?

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

### Which has better reviews, Sibme or NCTM Central?

Sibme is rated higher. Sibme averages 5.0 out of 5 from 5 ratings, while NCTM Central averages 3.0 from 16 ratings.

### Do Sibme or NCTM Central have ads?

Neither Sibme nor NCTM Central shows ads.

### Which is updated more often, Sibme or NCTM Central?

Sibme ships an update every 2 weeks, and NCTM Central every 2 months. Most recently, Sibme was updated on October 18, 2026 and NCTM Central on October 24, 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.*