Comparison

LockFast vs Body Axis

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

Head to head
About

LockFast

Features
Read full description

LockFast is the fasting timer built for people who take performance seriously. No meal plans. No calorie counting. No social feeds. Just a precision timer that tracks your metabolic state in real time and tells you exactly where you are in your fast. REAL-TIME METABOLIC ZONES LockFast tracks four metabolic phases as you fast: • Fed — digesting and storing energy (0-4h) • Fat Burning — glycogen depleting, fat mobilizing (4-12h) • Ketosis — producing ketones for fuel (12-16h) • Autophagy — cellular cleanup and renewal (16h+) Watch your progress ring fill as you move through each zone. A countdown shows exactly when you'll hit the next phase. FOUR PROVEN PROTOCOLS Choose the fasting window that fits your life: • 16:8 — the gold standard for beginners • 18:6 — intermediate, deeper fat burning • 20:4 — advanced, extended ketosis • OMAD — one meal a day, maximum autophagy Each protocol includes a full description of what to expect, example timing, and who it's best for. WATER TRACKING Stay hydrated during your fast with built-in water tracking. Quick-add buttons for 250mL, 500mL, and 750mL. Visual progress ring and daily goal tracking. Your body needs water to metabolize fat — LockFast makes sure you don't forget. EATING WINDOW TIMER When your fast ends, LockFast automatically starts an eating window countdown so you know exactly when to begin your next fast. No guesswork, no math. STREAKS & STATS Track your current streak, longest streak, total fasted hours, and average fast duration. A weekly bar chart shows your last 7 days at a glance — the visual accountability that keeps you consistent. SESSION SUMMARIES Every completed fast gets a summary card showing your duration, peak metabolic zone reached, and current streak. The moment of accomplishment that builds the habit. BUILT FOR FOCUS LockFast doesn't try to be a nutrition app, a workout tracker, or a social network. It does one thing — tracks your fast — and does it exceptionally well. Dark interface. Clean design. Zero distractions. Start your first fast in under 60 seconds. Terms of Use (EULA): https://lockfast.io/#terms

About

Body Axis

Unlock pain-free movement, improve posture, and build lasting mobility with expertly designed routines. This app helps restore your body's natural balance by targeting your core axis for realignment, strengthening, and stretching.

Highlights
  • Pain-free movement routines
  • Posture improvement
  • Mobility building
  • Targeted core axis routines
  • Strength and stretching exercises
  • Personalized programs
Features
Read full description

Body Axis™ is a mobility, strength, and corrective exercise app. It helps you improve range of motion, build strength and control, and move better in your workouts and in everyday life. Whether you are becoming more active, want to maintain mobility as you age, or already train regularly, Body Axis™ provides targeted movement plans for mobility, stability, strength, balance, coordination, and movement control. Instead of giving everyone the same generic routine, Body Axis™ helps you choose plans based on the area you want to work on and what you are experiencing. Choose whether an area feels stiff or tight, weak or unstable, has mild aches or discomfort, or you simply want to move better. Plans may focus on the neck and upper back, shoulders, middle back, lower back, hips, glutes, feet, and ankles. Many plans involve more than one area of the body because movement does not happen in isolation. Hip mobility can influence how the lower back moves. Glute strength can affect pelvic control. Foot and ankle function can influence movement through the knees and hips. Body Axis™ uses a three-part movement approach: RESET Movements designed to help reduce unnecessary tension and improve access to motion when appropriate. CONTROL Exercises that help develop strength, stability, coordination, and control through your available range of motion. INTEGRATE Movements that bring those improvements into more functional patterns for everyday movement, workouts, and physical activities. Body Axis™ plans are focused and practical, making them useful on their own or alongside your existing fitness routine. Active adults can use Body Axis™ to work on mobility restrictions, improve control in specific ranges, and better prepare for strength training, recreational activities, and everyday movement. You can also access full exercise demonstrations, adjust playback speed, enhance volume, and view exercises on a larger screen when supported by your device. WHO IS BODY AXIS™ FOR? Body Axis™ is designed for adults across a wide range of activity levels, including adults who are newer to structured movement and active adults who already walk, run, lift weights, or exercise regularly. It may be a good fit if you want to improve mobility, strength, balance, stability, movement control, or movement quality, or if you want targeted movement work to complement your current routine. WHAT BODY AXIS™ IS NOT Body Axis™ is not physical therapy, medical care, diagnosis, treatment, or injury rehabilitation. The app does not diagnose the cause of pain, identify injuries, or replace individualized care from a physician, physical therapist, or other qualified healthcare professional. Body Axis™ is not designed for acute injuries, recent surgery, fractures, severe or unexplained pain, significant swelling, numbness, tingling, sudden loss of strength, or other symptoms that may require medical evaluation. It also does not provide individualized treatment for diagnosed medical or structural conditions that may require modifications specific to the individual. If you are currently under the care of a physician, physical therapist, or other medical professional, follow their recommendations and speak with them before beginning a new exercise or movement program. Never push through sharp, severe, pinching, or worsening pain. Stop any movement that does not feel appropriate for your body. Body Axis™ is not about achieving perfect posture or forcing every body into one ideal position. The goal is to help you develop useful mobility, strength, control, and confidence so you can move better in everyday life, exercise, and the activities that matter to you. Created by Christina Nicci and The Body Institute, LLC. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

LockFast4 screens
Body Axis4 screens

Verdict

The call

The clearest difference is update cadence: LockFast at every 5 days against Body Axis's every 11 days. Body Axis's advantage is iOS requirement (16.0 vs 26.2). On price, 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

Both are free to download. LockFast sells 3 in-app purchases, starting at $3.99 per 7 days and Body Axis sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

LockFast ships an update every 5 days, Body Axis every 11 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
LockFast versus Body Axis: the parameters behind the verdict, then further details
ParameterLockFastBody Axis
PriceFreeFree
Rating—4.8 (26 ratings) — better
Positive reviews—96.0% of reviews
Number of ratings—26 — better
Update frequencyEvery 5 days — betterEvery 11 days
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad — betteriPhone
Requires iOS26.216.0 — better
Further details — not scored
Size1 MB64 MB
Age rating4+4+
DeveloperDirk WoodThe Body Institute

In-app purchases

3 purchases

LockFast

Subscriptions2
  • Weekly3 Days trial$3.997 Days
  • Annual7 Days trial$49.991 Year
One-time1
  • LifeTime$149.99
2 purchases

Body Axis

Subscriptions2
  • Monthly Access$19.991 Month
  • Annual Access$199.991 Year

Questions

Is LockFast free?
LockFast is free to download, with in-app purchases available.
Is Body Axis free?
Body Axis is free to download, with in-app purchases available.
Do LockFast or Body Axis have ads?
Neither LockFast nor Body Axis shows ads.
Which is updated more often, LockFast or Body Axis?
LockFast ships an update every 5 days, and Body Axis every 11 days. Most recently, LockFast was updated on October 24, 2026 and Body Axis on October 28, 2026.

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