Numsy vs Positional Encoding
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Numsy
Master numeral system conversions between binary, hexadecimal, and decimal. This tool is designed for computer professionals to quickly convert numbers mentally for tasks like IP addresses and color codes.
- Binary conversion
- Hexadecimal conversion
- Decimal conversion
- Mental math practice
- Computer science applications
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Practice the conversion between binary, hexadecimal, and decimal numbers. If you work with computers, you may want to be able to convert these numbers in your head—whether for IP addresses, color codes, or other uses. This app can help you achieve that goal.
Positional Encoding
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This is an educational App for readers interested in the sin/cos encoding of the token positions in large language models (LLM). Play with this App to acquire a deeper understanding of the positional encoder as it was described in the famous *Attention is All You Need* paper. In particular the App shows how the correlation between two positional vectors depends only on the distance between the corresponding two integer position.
Screenshots
Verdict
The clearest difference is update cadence: Positional Encoding at monthly against Numsy's every 21 months. Numsy's advantage is iOS requirement (16.6 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Numsy ships an update every 21 months, Positional Encoding monthly. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.
| Parameter | Numsy | Positional Encoding |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 21 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.6 — better | 18.5 |
| Further details — not scored | ||
| Size | 8 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Stephan Lindow | carl nohre |
In-app purchases
Numsy
No in-app purchases
Positional Encoding
No in-app purchases
Questions
Is Numsy free?
Is Positional Encoding free?
Do Numsy or Positional Encoding have ads?
Which is updated more often, Numsy or Positional Encoding?
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