Comparison

Simple One vs APECS

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

Head to head
About

Simple One

This app helps you accurately determine your one-rep max (1RM) using multiple proven formulas. It provides reliable estimates to help you choose the right weights for your training, ensuring safer and more effective strength progression.

Highlights
  • Accurate one-rep max estimates
  • Multiple proven calculation formulas
  • Determine training weights
  • Fast and simple interface
  • Distraction-free design
Features
Read full description

Stop guessing your max. Train with confidence. Simple One Rep Max Calculator helps you understand how strong you really are — so every workout has a purpose. By calculating your one-rep max using multiple proven formulas, you get realistic numbers you can trust, not just a single estimate. Know your limits, choose the right weights, and progress safely — whether you’re pushing for new PRs or building strength over time. Why you’ll love it • Clear and reliable max lift estimates • Multiple formulas for better confidence • Training weights at the right intensity • Fast, simple, and distraction-free Less guessing. Better progress.

About

APECS

Analyze your posture using your device's camera for improved back health and body shape. It offers detailed assessments of various body parts, including specialized tests for symmetry and movement, with options for both automatic and manual tracking.

Highlights
  • Camera-based posture analysis
  • Specialized symmetry tests
  • Range of motion evaluation
  • Automatic and manual modes
  • Detailed PDF reports
  • Posture correction exercises
Features
Read full description

Track your posture regularly for healthy back and perfect body shape- simply using your device camera. APECS analyzes photos from all sides - from head to toe - and includes specialized tests for shoulders, neck, trunk and face symmetry, and many more! Our precise photogrammetric algorithms help you to make accurate posture assessments. Stay motivated on your journey to correct posture and healthy you! • APECS tools for body assessment: - Front, back, two sides - full height. - Golden Ratio - ideal body proportions assessment. - Head, neck, and shoulder specialized evaluation (forward head posture, FHP, flat back etc). - Adam's forward Bend test. - Posture symmetry assessment. - ATSI, POTSI (Anterior and Posterior Trunk Symmetry Index). - Facial symmetry evaluation. - Valgus / varus knee test. - "Range of Motion" evaluation - Custom angles. • Dynamic Posture assessment: - Lateral posture video analysis - Angle and movement evaluation - Video Result + PDF Report - Automatic tracking & Green marker recognition - New tool for health professionals, coaches, trainers, instructors and researchers. • Automatic detection mode Put green markers on a person's body, the app will detect them on photos and give precise results in a matter of seconds. • Manual mode Use APECS without markers. Use semi-manual, where APECS pre-positions landmarks and you adjust them. Or identify each landmark on the photo manually yourself and receive precise results. • Range of motion - a specially developed tool that allows you to create your list of surveys. Measure whatever angles desired between the selected points on the human body, form your own survey patterns and add your own comments to the standard conclusions. This option is specifically designed for advanced users and researchers. • Numerous features and possibilities: - Detailed PDF posture report with text explanation. - Hide the face with a "mask" for privacy - Customize PDF reports (add notes, logos). - Save your results in JPEG or PDF. - Daily tips for posture improvement and pain relief. - Best exercises for posture correction, muscles and core strengthening. • Created to help you - How effective are yoga or pilates exercises for posture improvement, pain relief, core muscle strength, flexibility? - How training or massage sessions influence posture? - Regular posture screening, coupled with a prescribed treatment by a doctor, could enhance progress in correcting posture, maintain motivation and ensure good client-professional communication. - Good posture is essential for health, productivity, good mood. This is especially important for children, teenagers, girls and women, who are predisposed to posture problems. - Designed for professional use, the app is a unique tool to quickly evaluate the anthropometric characteristics of posture. • Developed with doctors, APECS uses research on - Wide range of posture issues (neck and spine issues, leg and foot problems, hunching, slouched shoulders, pelvic tilts, forward head etc). - Physical rehabilitation programs (chiropractors, orthopedics, physiotherapists). - Posture issues in athletic training (sports, weight lifting, endurance training). - Well-being programs (masseurs, yoga and pilates instructors). - Postural defects, trunk symmetry, back evaluation, head position evaluation, neck and shoulder alignment, facial symmetry. • Is it FREE? All main features for postural evaluation are FREE and there are NO ADS. For in-depth insight, try advanced subscriptions with a free trial! • Are photos uploaded online? No, when you use APECS, all your photos and PDF reports remain ONLY on your device. • Progress We continuously improve APECS (support@saneftec.com) Disclaimer: APECS is a helping evaluation tool. Results should be confirmed by a professional doctor. In no case should you use this app as a sole tool for assessment of your posture.

Screenshots

Simple One1 screens
APECS4 screens

Verdict

The call

The clearest difference is price: APECS at Free against Simple One's $0.99. APECS also leads on update cadence (monthly vs every 13 months) and device support (3 vs 1). Simple One's advantage is rating (4.5 vs 1.7) and in-app purchases (none vs 11). On ads 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

APECS is free to download; Simple One costs $0.99 up front. APECS sells 11 in-app purchases, starting at $2.49 per month. Simple One asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Simple One holds the better App Store score, 4.5 against 1.7. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 50% of Simple One's written reviews are positive against 18% of APECS's.

UpkeepUpdate frequency

Simple One ships an update every 13 months, APECS monthly. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

Scorecard9 real differences · 1 level
Simple One versus APECS: the parameters behind the verdict, then further details
ParameterSimple OneAPECS
Price$0.99Free — better
Rating4.5 (2 ratings) — better1.7 (7 ratings)
Positive reviews50.0% of reviews — better18.0% of reviews
Number of ratings27 — better
Update frequencyEvery 13 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size2 MB206 MB
Age rating17+17+
DeveloperAbove ASSaneftec

Customer experience

Simple One

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

APECS

All ratings7 ratings
Positive14.3%
Neutral0.0%
Negative85.7%
Written reviews50 reviews
Positive18.0%
Neutral10.0%
Negative72.0%

In-app purchases

None

Simple One

No in-app purchases

11 purchases

APECS

Subscriptions11
  • APECS Standard: 1-Month Sub7 Days trial$2.491 Month
  • APECS Pro: 1-Month Sub7 Days trial$3.491 Month
  • APECS Pro Plus: 1-Month7 Days trial$5.991 Month
Show 8 more
  • APECS Standard: 3-Month Sub7 Days trial$6.993 Months
  • APECS Pro: 3-Month Sub7 Days trial$7.493 Months
  • APECS Pro Plus: 3-Month7 Days trial$11.003 Months
  • APECS Pro: 6-Month Sub7 Days trial$13.996 Months
  • APECS Standard: 1-Year Sub7 Days trial$14.491 Year
  • APECS Pro: 1-Year Sub7 Days trial$21.991 Year
  • APECS Pro Plus: 6-Month7 Days trial$21.996 Months
  • APECS Pro Plus: 1-Year7 Days trial$35.001 Year

Questions

Is Simple One free?
Simple One costs $0.99, with no in-app purchases.
Is APECS free?
APECS is free to download, with in-app purchases available.
Which has better reviews, Simple One or APECS?
Simple One is rated higher. Simple One averages 4.5 out of 5 from 2 ratings, while APECS averages 1.7 from 7 ratings.
Do Simple One or APECS have ads?
Neither Simple One nor APECS shows ads.
Which is updated more often, Simple One or APECS?
Simple One ships an update every 13 months, and APECS monthly. Most recently, Simple One was updated on October 20, 2026 and APECS on October 21, 2026.

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