What is NumSys's rating?

NumSys is rated 4.9 stars across 537 ratings on the Play Store.

NumSys is published by Sandello, launched on Jan 16, 2016.

Where does NumSys rank in its category?

NumSys ranks #19556 of 77129 apps in Tools, putting it in the top 25.4% by revenue.

How much does NumSys earn?

Q: How much does NumSys earn?

NumSys earns approximately 324 per month based on bumetric's ML revenue forecast, calibrated against 77129 comparable Android apps in Tools.

Android app from Sandello · Tools

ML forecast ★ 4.9 · 537 Free

~324/mo

ML revenue forecast. Calibrated against 77129 apps in this category.

Confidence band

±15%

High — many comparable apps with verified data

At a glance

Earns 1.71× more than the category median (189/mo).
Ranks #19,556 of 77,129 in Tools (top 25.4% by revenue).
Launched Jan 16, 2016 · last updated May 19, 2026.

What the app looks like

Live screenshots from the Play Store, captured by our snapshot worker. Tap any image to enlarge.

NumSys's revenue trajectory

Forecast revenue from snapshot history. Last 1 months.

Where NumSys sits in Tools

Revenue distribution of 77129 comparable apps. NumSys highlighted.

NumSys vs comparable apps

Revenue trajectory side-by-side. Bold = NumSys, ghosted = peers.

App spec

Version

Varies with device

Last update

May 19, 2026

Launched

Jan 16, 2016

Price

Free

Monetization

Free

What NumSys actually does (from store listing)

Simple and intuitive to use converter and calculator of number systems with a complete solution and decimal fractions. Fast transfer from one number system to another (from 2 to 36) with support for decimal fractions. Ability to perform mathematical operations: addition, subtraction, multiplication, division. Contribute: https://github.com/jedi1150/number-systems

Comparable Android apps

The five apps in Tools with the closest revenue to NumSys. Click any to see its detail page.

App	Revenue	Rating	Ratings
Poker Timer	324	★ 5.0	236
Super Hearing Ear Pro	324	★ 3.7	235
Link2Home	324	★ 2.8	712
Daitem Secure	324	★ 1.9	3K
Lucky Draw	324	—	0

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How we calculated this

Each forecast combines App Store rating, ratings count, monetisation model, pricing tier, IAP signals and ad-supported flag. The base estimate is then multiplied by a per-category scaling factor learned from apps with founder-verified MRR. Every number on this page comes from public APIs and bumetric's own snapshot history.

Full methodology covers input variables, accuracy bands per category and how we treat apps without comparable anchors. See also the live data on NumSys's tracker page for current rating, reviews and snapshot timeline.

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