Comparison

RapidIdentity App vs Linear System Solver

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Push notification authentication
  • Time-based One-Time Passcode (TOTP) generation
  • Offline TOTP functionality
  • Consolidates multiple authentication tools
  • PIN and Touch ID protection for passcodes
Features
Read full description

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.

About

Linear System Solver

Features
Read full description

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

RapidIdentity App4 screens
Linear System Solver2 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
RapidIdentity App versus Linear System Solver: the parameters behind the verdict, then further details
ParameterRapidIdentity AppLinear System Solver
PriceFree — better$0.99
Rating1.5 (639 ratings) — better—
Positive reviews6.5% of reviews—
Number of ratings639 — better—
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.2 — better15.0
Further details — not scored
Size109 MB1 MB
Age rating4+4+
DeveloperIdentity Automation, LPLuigi 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

None

RapidIdentity App

No in-app purchases

None

Linear System Solver

No in-app purchases

Questions

Is RapidIdentity App free?
RapidIdentity App is free to download, with no in-app purchases.
Is Linear System Solver free?
Linear System Solver costs $0.99, with no in-app purchases.
Do RapidIdentity App or Linear System Solver have ads?
Neither RapidIdentity App nor Linear System Solver shows ads.
Which is updated more often, RapidIdentity App or Linear System Solver?
RapidIdentity App ships an update every 3 months, and Linear System Solver every 3 days. Most recently, RapidIdentity App was updated on October 6, 2026 and Linear System Solver on October 12, 2026.

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