RapidIdentity App vs Linear System Solver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RapidIdentity App
Enhance security with an additional layer of verification for app sign-ins. This app supports push notifications and time-based one-time passcodes, working offline and consolidating multiple authentication tools into one secure place.
- Push notification authentication
- Time-based One-Time Passcode (TOTP) generation
- Offline TOTP functionality
- Consolidates multiple authentication tools
- PIN and Touch ID protection for passcodes
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Identity Automation makes it easier than ever to provide an additional layer of security when signing into work and personal apps with the RapidIdentity Mobile Application. The RapidIdentity Mobile Client enables organizations to use Push and Time-based One-Time Passcode (TOTP) authentication methods in place of passwords or as a second verification step during the login process to RapidIdentity and RapidIdentity SSO enabled applications. RapidIdentity TOTP works offline and does not require any cellular or wifi connection. The RapidIdentity Mobile Client can also generate TOTP passcodes for RapidIdentity and other personal SaaS services and web applications that support mobile-generated passcodes, enabling users to consolidate other authentication tools into a single app. It supports all the same apps supported by Google Authenticator, including Gmail, LastPass, Evernote, Dropbox, Facebook, and much more. With the RapidIdentity Mobile App, you can also lock specific passcodes behind a PIN or your phone Touch ID, so even if your phone is taken, your codes are not left exposed. When an organization employs RapidIdentity Mobile Client to facilitate authentication to their environment, it is necessary to have RapidIdentity Server version 4.8.2 or later to ensure the mobile device can receive notifications from RapidIdentity Server.
Linear System Solver
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This application helps students or any person who needs, to solve a system of 3 linear equation with 3 unknowns. A system of linear equations is of this type: / | a11.x + a12.y + a13.z = c1 | a21.x + a22.y + a23.z = c2 | a31.x + a32.y + a33.z = c3 \ Values are required for x,y,z which satisfy the 3 equations. In the application skema, insert the matrix coefficients: a11 a12 a13 a21 a22 a23 a31 a32 a33 and next insert the constant values: c1 c2 c3 Finally, hit the Solve button. If the system has a real solution, this will be shown (x,y,z) in the last row. If no real solution exists, NO,NO,NO will be shown.
Screenshots
Verdict
The clearest difference is price: RapidIdentity App at Free against Linear System Solver's $0.99. RapidIdentity App also leads on iOS requirement (12.2 vs 15.0). Linear System Solver's advantage is update cadence (every 3 days vs every 3 months). On 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
RapidIdentity App is free to download; Linear System Solver costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RapidIdentity App ships an update every 3 months, Linear System Solver every 3 days. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.
| Parameter | RapidIdentity App | Linear System Solver |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 1.5 (639 ratings) — better | — |
| Positive reviews | 6.5% of reviews | — |
| Number of ratings | 639 — better | — |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 109 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Identity Automation, LP | Luigi Fonti |
Bugs and requests
RapidIdentity App
Reported bugs
3 issues- QR code scanner doesn't work
- Can't log in with existing account
- Ping me feature frequently fails
Requested features
3 requests- Bring back old branding
- Add Apple Watch support
- Improve notification reliability
Linear System Solver
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RapidIdentity App
No in-app purchases
Linear System Solver
No in-app purchases
Questions
Is RapidIdentity App free?
Is Linear System Solver free?
Do RapidIdentity App or Linear System Solver have ads?
Which is updated more often, RapidIdentity App or Linear System Solver?
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