# Number Sequence Calculator

> Find missing & next numbers in sequences. IQ test & aptitude practice.

Canonical page: [https://chrome-stats.com/d/com.expressionfinder](https://chrome-stats.com/d/com.expressionfinder)

## Overview

- **ID:** `com.expressionfinder`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** PLATANUS
- **Category:** EDUCATION
- **Downloads:** 162,286
- **Rating:** 4.43 / 5 (783 ratings)
- **Version:** 336.0
- **Last updated:** 2026-08-01
- **First published:** 2015-01-09
- **Publisher country:** GR
- **Size:** 5.64 MB
- **Data as of:** 2026-09-16
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.expressionfinder)
- **Website:** [https://platanussoft.github.io](https://platanussoft.github.io/)
- **Privacy policy:** [https://platanussoft.appspot.com/NumberSeriesCalculatorPrivacy.html](https://platanussoft.appspot.com/NumberSeriesCalculatorPrivacy.html)

## Description

Learn how to solve number series and pattern recognition problems commonly used in IQ tests. Practice and improve your logical thinking and problem-solving skills with offline tests that include answers and explanations. Features include solving missing numbers and letters in sequences, interactive number series tests, progressive matrices, recognition of patterns such as Fibonacci numbers and primes, and visual charts to track your progress.

Ideal for students, teachers, and math enthusiasts, this extension offers categories like Arithmetic Progression, Geometric Progression, Alternating Series, Prime and Fibonacci sequences, and more. You can focus on one category or take a mixed test for a comprehensive brain workout. It also supports custom math expressions and offline use; the paid version is available without ads.

## Rankings

- #176,630 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.VIBRATE`
- `com.expressionfinder.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Most reviews praise the app as easy to use and a highly useful solver for number sequences, with many calling it excellent or the best. Users appreciate its simple design and find sequence puzzles enjoyable. However, reliability concerns are recurring, with reports of the app not functioning and no solutions returned. Some users also request feature enhancements like range-limited inputs and multiple-choice options. Overall sentiment is positive, but reliability and feature improvements are recurring themes.

### Pros

- Easy to use with a simple, user-friendly interface.
- Very useful math solver that serves as a go-to tool for number sequences.
- Generally positive reception with praise like excellent, great, or best app.
- Fun and engaging for sequence puzzles and learning.

### Cons

- Reliability issues: the app sometimes does not function correctly and may return No solution found.
- Feature gaps: users request enhancements such as restricting inputs to a numeric range and providing multiple-choice answer options.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.expressionfinder)