Comparison

Fast Equation Plus vs GVM LED

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

Head to head

★ 3.04 ratingsView app →

About

Fast Equation Plus

Features

Read full description

Enter the coefficients for your Quadratic Equation and this simple app will output the solutions. Apple Watch supported.

About

GVM LED

Control photography lamps via Bluetooth connection. Adjust settings and manage your lighting equipment directly from your mobile device.

Highlights

Bluetooth lamp control
Photography lighting management
App-controlled lighting
GVM product integration

Features

Read full description

This is a software that can control the photography lamp. The app controls the photography lamp product with app function under GVM through Bluetooth connection.

Screenshots

Fast Equation Plus1 screens

GVM LED4 screens

Verdict

The call

The clearest difference is price: GVM LED at Free against Fast Equation Plus's $0.99. GVM LED also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (13.0 vs 15.6). Fast Equation Plus's advantage is device support (5 vs 3). On ads and in-app purchases 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

GVM LED is free to download; Fast Equation Plus costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fast Equation Plus ships an update every 6 months, GVM LED every 2 months. The most recent releases landed on September 30, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level

Fast Equation Plus versus GVM LED: the parameters behind the verdict, then further details
Parameter	Fast Equation Plus	GVM LED
Price	$0.99	Free — better
Rating	—	3.0 (4 ratings) — better
Positive reviews	—	22.0% of reviews
Number of ratings	—	4 — better
Update frequency	Every 6 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod, Mac, Apple Watch — better	iPhone, iPad, iPod
Requires iOS	15.6	13.0 — better
Further details — not scored
Size	3 MB	49 MB
Age rating	4+	4+
Developer	a Rausa	丹丹陈

Bugs and requests

Fast Equation Plus

Not enough reviews yet to summarise bugs or requests.

GVM LED

Reported bugs

12 issues

Login credentials rejected despite correct password
Verification code times out before use
App crashes during device synchronization
Cannot connect more than one light at a time
Bluetooth connection drops unexpectedly

Show 7 more

App freezes on main page or navigation tabs
Password matching validation fails despite identical entries
Login fails when using non-.com email addresses
App requires WiFi for login despite Bluetooth-only operation
In-app message/problem form always returns 'FAILED' status
Incompatibility with iPad Pro color adjustment
Recent update broke previously working connections

Requested features

10 requests

Remove mandatory login requirement for local Bluetooth control
Enable independent control of multiple lights simultaneously
Expand scene customization options beyond 8 presets
Add keyboard shortcuts and Stream Deck integration for streaming
Improve color wheel with more granular color selection

Show 5 more

Add dark mode option
Create desktop/PC version with better controls
Allow grouping of lights for synchronized control
Implement offline mode for Bluetooth-only operation
Add light naming persistence across app sessions

In-app purchases

None

Fast Equation Plus

No in-app purchases

None

GVM LED

No in-app purchases

Questions

Is Fast Equation Plus free?

Fast Equation Plus costs $0.99, with no in-app purchases.

Is GVM LED free?

GVM LED is free to download, with no in-app purchases.

Do Fast Equation Plus or GVM LED have ads?

Neither Fast Equation Plus nor GVM LED shows ads.

Which is updated more often, Fast Equation Plus or GVM LED?

Fast Equation Plus ships an update every 6 months, and GVM LED every 2 months. Most recently, Fast Equation Plus was updated on September 30, 2026 and GVM LED on October 17, 2026.