Comparison

Lumos Sleep vs Forge Strength Trainer

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

Head to head
About

Lumos Sleep

This app helps you combat jet lag, improve sleep during night shifts, and wake up feeling refreshed. It uses patented technology and a proprietary algorithm to regulate your body's natural circadian rhythm, offering tailored programs for various sleep schedules.

Highlights
  • Jet lag and night shift assistance
  • Circadian rhythm regulation
  • Tailored sleep programs
  • Sunrise alarm feature
  • Light exposure recommendations
  • Smart Sleep Mask integration
Features
Read full description

Lumos Sleep: Jet lag and night shift assistant If you want to travel without jet lag, sleep better when working night shifts, get up early, or simply wake up feeling refreshed, Lumos is here for you. Despite their popularity, tactics such as soothing music or adjusting meal schedules are either less effective or very cumbersome in combating jet lag and night shift woes. To truly conquer these sleep disruptions, a more impactful solution directly engaging the body's circadian rhythm is essential for lasting results. A restful night's sleep begins with a healthy circadian rhythm, the body’s natural biological clock. Enter Lumos – the groundbreaking sleep app designed to revolutionize your sleep patterns. Powered by patented technology originating from Stanford University research, Lumos tackles sleep challenges brought on by swiftly changing schedules with its proprietary algorithm powered by research from top universities, supported by NASA, the Department of Defense, and others. With a suite of modules tailored for diverse sleep schedules, Lumos simplifies the transition. From combating jet lag to navigating night shifts, adjusting daily bedtimes to seamlessly adapting during daylight saving, Lumos guides you every step of the way. No matter whether you are traveling or working on night shifts, Lumos has you covered. Set your schedule, and let Lumos generate tailored programs for you. Experience the transformative effects of the light flash program delivered through the Lumos Smart Sleep Mask, a proven method derived from Stanford research for regulating your body's natural rhythms. Experience a refreshing wake-up with Lumos' innovative Sunrise Alarm, expertly crafted to expose you to gentle morning light, ensuring you wake up feeling revitalized and ready to conquer the day. If you don’t own a Lumos Smart Sleep Mask, no worries. Receive actionable recommendations on light exposure while traveling or working night shifts, all without requiring any additional tools. Lumos becomes your sleep companion, guiding you towards restorative sleep effortlessly. Trusted by the US military and professional athletes, including world-renowned champions, Lumos is the go-to solution for optimizing sleep regardless of your lifestyle. Download Lumos now and unlock the secret to revitalizing sleep – your personal sleep revolution awaits. https://www.wsj.com/articles/can-this-mask-make-jet-lag-a-thing-of-the-past-1509115689 https://www.wsj.com/articles/trouble-sleeping-high-tech-masks-can-help-1532535248 https://www.cnet.com/tech/mobile/bon-voyage-jet-lag-this-smart-sleep-mask-promises-a-cure-lumos/ https://athletechnews.com/product-of-the-week-lumos-sleep-mask/ https://www.msn.com/en-gb/travel/news/sleep-expert-shares-his-top-tips-for-sleeping-like-a-pro-while-flying/ar-AA1fdMcL Please see our website for additional information.

About

Forge Strength Trainer

Track your strength training, nutrition, and body composition privately. Log workouts, calculate personalized calorie and macro targets, and monitor key body metrics without an account or subscription. All your data stays on your device.

Highlights
  • Local data storage, no cloud sync
  • Customizable workout splits and exercises
  • Personalized calorie and macro targets
  • Barcode scanner for food logging
  • Body composition and circumference tracking
  • One-tap CSV data export
  • Optional Apple Health read-only integration
Features
Read full description

Forge is a strength training, nutrition, and body composition tracker built for people who want to log their training without paying a monthly fee, signing up for an account, or handing their data to a server. Everything you log lives in a local database on your phone. There is no cloud. There is no sync. There are no ads, no analytics, and nothing to subscribe to. One purchase. That's it. TRAINING Build custom splits with any number of training days. Log sets with automatic rest timers (1, 3, 5, or custom minutes). Tap any set to see exactly which plates go on the bar, per side — 45, 35, 25, and 15 lb bars, with a warning when a weight isn't loadable with standard plates. Every working set is scored against your previous best with an estimated 1RM, and PRs are flagged on the spot. Warmup ramps fill in with one tap and stay out of your working-set volume. Also includes drop sets, supersets, bodyweight tracking, a catch-up queue for missed sessions, and a session timer that starts on your first completed set — not when you open the app. WEEKLY VOLUME A live count of working sets per muscle group, each with an evidence-based target range. Bars show under-, in-, and over-range at a glance, so you can spot the under-trained area before the week is over. NUTRITION Derives daily calorie and macro targets from body composition using Katch-McArdle BMR or Mifflin-St Jeor formulas. Includes barcode scanner via Open Food Facts, macro calculator, daily macro rings, and 14-day trend charts. BODY Tracks weight, body fat %, lean mass, circumferences (shoulders, waist, arms, chest, quads), week-over-week deltas, and 8-week trend charts with goal progress bars. REST DAYS Rest days aren't blank. Forge offers guided stretch and mobility holds, scoped to the muscle groups you trained in the last few days. APPLE HEALTH (OPTIONAL, READ-ONLY) Pulls duration, average heart rate, and active calories from Apple Watch workouts. ONE-TAP CSV EXPORT Exports measurements, food log, and set history as plain CSV files. WHAT FORGE WILL NEVER DO • Ask you to create an account • Collect your email • Send your data to a server • Show you ads • Charge you a subscription • Track you across apps

Screenshots

Lumos Sleep4 screens
Forge Strength Trainer4 screens

Verdict

The call

The clearest difference is review sentiment: Forge Strength Trainer at 100% against Lumos Sleep's 42%. Forge Strength Trainer also leads on rating (5.0 vs 2.5). Lumos Sleep's advantage is price (Free vs $9.99) and ratings volume (16 vs 3). On update cadence, 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

Lumos Sleep is free to download; Forge Strength Trainer costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Forge Strength Trainer holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: Lumos Sleep has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 42% of Lumos Sleep's written reviews are positive against 100% of Forge Strength Trainer's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Lumos Sleep versus Forge Strength Trainer: the parameters behind the verdict, then further details
ParameterLumos SleepForge Strength Trainer
PriceFree — better$9.99
Rating2.5 (16 ratings)5.0 (3 ratings) — better
Positive reviews41.7% of reviews100.0% of reviews — better
Number of ratings16 — better3
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhoneiPhone
Requires iOS16.0 — better16.4
Further details — not scored
Size76 MB46 MB
Age rating4+4+
DeveloperLumosTech, Inc.Kevin Gillespie

Customer experience

Lumos Sleep

All ratings13 ratings
Positive46.2%
Neutral0.0%
Negative53.8%
Written reviews12 reviews
Positive41.7%
Neutral0.0%
Negative58.3%

Forge Strength Trainer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Lumos Sleep

No in-app purchases

None

Forge Strength Trainer

No in-app purchases

Questions

Is Lumos Sleep free?
Lumos Sleep is free to download, with no in-app purchases.
Is Forge Strength Trainer free?
Forge Strength Trainer costs $9.99, with no in-app purchases.
Which has better reviews, Lumos Sleep or Forge Strength Trainer?
Forge Strength Trainer is rated higher. Lumos Sleep averages 2.5 out of 5 from 16 ratings, while Forge Strength Trainer averages 5.0 from 3 ratings.
Do Lumos Sleep or Forge Strength Trainer have ads?
Neither Lumos Sleep nor Forge Strength Trainer shows ads.
Which is updated more often, Lumos Sleep or Forge Strength Trainer?
Lumos Sleep ships an update fortnightly, and Forge Strength Trainer fortnightly. Most recently, Lumos Sleep was updated on November 3, 2026 and Forge Strength Trainer on November 5, 2026.

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