Comparison

Slendertone Connect vs RLT SYSTEM MASTER

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

Head to head
About

Slendertone Connect

This app offers a personalized training experience to help you achieve your toning goals. It provides custom coaching, interactive programs, workout reminders, and progress tracking, all controlled wirelessly via your smart device. Achieve firmer abs, improved posture, and enhanced core strength.

Highlights
  • Personalized training experience
  • Custom toning programs
  • Interactive toning programs
  • Workout reminders
  • Progress tracking
  • Wireless control via smart device
Features
Read full description

A completely personalised training experience to keep you motivated and help you hit your toning targets from 4 weeks Requirements • Slendertone Connect abs toning belt • iPhone 5S (or newer) What are the benefits of a stronger core? A strong core offers much more than toned abs and a flatter tummy – it helps you run further, jump higher, sit straighter, stand taller and feel amazing. Connect is the smartest, most innovative abdominal trainer available, offering custom coaching and motivation, interactive toning programmes, workout reminders and progress tracking. Custom toning programmes 5 high-intensity programmes for specific training goals, including: 1. Essential abdominal training – improve abdominal definition and look and feel amazing. 2. Advanced abdominal training – take your core strength and endurance to the next level. 3. Post-natal firming – for busy mums toning the tummy and getting back into shape. 4. Complement your fitness regime – boost your performance in sports and training. 5. Upcoming event – reduce your waistline and tone your abs for special occasions. Personal coaching Personalised coaching and motivation, progress tracker and toning reminders to help you hit every training goal and beat your weekly workout targets. Sync seamlessly You can sync your smart device to your Connect belt to wirelessly control every toning workout. Complete abdominal workout Strengthens all of the abdominal muscles: the transversus and rectus abdominis (the six pack) and the internal and external obliques. The deep, difficult-to-tone transversus abdominis helps reduce the waistline by tightening and firming the tummy. Clinically proven technology Clinical trials conducted by Dr John Porcari at the University of Wisconsin-La Crosse (2005 and 2009) concluded: • 100% of users reported firmer, more toned abs from 6 weeks. • Users experienced a 72% average increase in abdominal endurance from 4 weeks. • Users experienced a 49% average increase in abdominal strength from 4 weeks. • Users reduced their waistline by an average of 3.5cm from 8 weeks. • 54% of users reported improved posture from 4 weeks. With extensive clinical trials and 50+ years of expertise, we are constantly perfecting and testing our products so that you can achieve the very best results. To find out more about our unique brand, innovative technology and clinical trials, please visit us at slendertone.com.

About

RLT SYSTEM MASTER

Features
Read full description

The RLT System Master app gives you convenient remote control of your FS8 or FS2 panel. To connect, simply select the same group number in the app and on your panel. Once the group numbers match, the app is connected to the panel. You can then select the desired channels, set the session time and pulse frequency, or choose from the built-in smart modes. Once your settings are confirmed, you can start your therapy session directly from the app. The panel will turn on automatically and shut off when the selected session time is complete. With the RLT System Master app, customizing and managing your red light therapy sessions is simple, convenient, and effortless.

Screenshots

Slendertone Connect3 screens
RLT SYSTEM MASTER3 screens

Verdict

The call

The clearest difference is ads: RLT SYSTEM MASTER at none against Slendertone Connect's shown. RLT SYSTEM MASTER also leads on update cadence (every 4 days vs every 2 months) and iOS requirement (12.0 vs 14.0). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Slendertone Connect ships an update every 2 months, RLT SYSTEM MASTER every 4 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Slendertone Connect versus RLT SYSTEM MASTER: the parameters behind the verdict, then further details
ParameterSlendertone ConnectRLT SYSTEM MASTER
PriceFreeFree
Rating4.6 (456 ratings) — better—
Positive reviews17.0% of reviews—
Number of ratings456 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size42 MB37 MB
Age rating17+4+
DeveloperSlendertone中玲 曹

Bugs and requests

Slendertone Connect

Reported bugs

4 issues
  • Login issues
  • Connectivity problems
  • Crashes during setup
  • Data loss and progress not tracked

Requested features

3 requests
  • Integration with Apple Health
  • Apple Watch app
  • Stay-logged-in option

RLT SYSTEM MASTER

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Slendertone Connect

No in-app purchases

None

RLT SYSTEM MASTER

No in-app purchases

Questions

Is Slendertone Connect free?
Slendertone Connect is free to download, with no in-app purchases.
Is RLT SYSTEM MASTER free?
RLT SYSTEM MASTER is free to download, with no in-app purchases.
Do Slendertone Connect or RLT SYSTEM MASTER have ads?
Slendertone Connect shows ads; RLT SYSTEM MASTER does not.
Which is updated more often, Slendertone Connect or RLT SYSTEM MASTER?
Slendertone Connect ships an update every 2 months, and RLT SYSTEM MASTER every 4 days. Most recently, Slendertone Connect was updated on October 24, 2026 and RLT SYSTEM MASTER on October 14, 2026.

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