Comparison

RunBuilder vs Volt

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

Head to head
About

RunBuilder

Create custom running workouts with detailed control over distance, time, and pace. Map out your running routes with precision, and track your progress with GPS and heart rate data. Sync your runs to Apple Health and other platforms.

Highlights
  • Custom workout builder
  • Plain English workout input
  • FIT file import
  • Screenshot workout import
  • Interactive course mapping
  • GPS and heart rate tracking
  • Apple Health integration
Features
Read full description

RunBuilder turns the workout in your head — or the one buried in your coach's email — into a structured session you can actually run. Build it on iPhone or iPad, run it outdoors, on a treadmill, or from Apple Watch, then see how it landed. BUILD IT YOUR WAY • Step by step, with control over distance, time, pace, and recovery • Type or dictate it in plain English: "2 mile warmup, 6x800 at 5K pace with 400 jog, 2 mile cooldown" • Import a FIT workout file • Screenshot a workout and let RunBuilder read it • Start from a built-in template • Paste anything from the clipboard MAP YOUR COURSES • Tap out a route and watch it snap to real roads and paths • Import a GPX file from a recorded run or another app • Switch to straight lines for tracks and trails • Distance and elevation gain update as you build • Mile or kilometer markers appear right on the map • Search for a starting point anywhere in the world • Retrace to start, or route back, for an easy out-and-back or loop • Undo and redo any point • Save courses by name, then duplicate one to build a variation • Check the elevation profile before you head out • Run a course on iPhone or Apple Watch with your route and live position on screen RUN IT • Outdoor runs with GPS, pace, distance, and heart rate • Structured workouts on Apple Watch from your synced library • Treadmill runs with automatic speed and incline control on compatible Wahoo FTMS treadmills (Pro) • Spoken step announcements and periodic audio updates • Music controls without leaving the run screen • Runs save to Apple Health, route included REVIEW IT • History keeps the runs you finish in RunBuilder • See the prescribed goal next to what you actually ran, including repeats • Mile or kilometer splits with pace and heart rate • Scrubbable pace and heart-rate charts • A map colored by pace, with start and finish marked • Hide warm up, rest, and cool down when you want just the work • Share a PDF or text summary with a coach • Export the completed activity as a FIT file • Mark the run Easy, Steady, or Hard next to your notes CONNECT YOUR GEAR • Bluetooth heart rate monitors • Foot pods and running power meters, including Stryd • Engo smart glasses, with your key metrics in view SEND IT ANYWHERE • Garmin Connect • Wahoo • Apple Watch — run it in the RunBuilder Watch app, or schedule it into the built-in Workout app • Export a workout FIT file, a completed-activity FIT file, or a printable PDF BUILT FOR IPHONE, IPAD, AND APPLE WATCH Large, readable run screens meant to be glanced at mid-stride, whether the phone is in your hand, the iPad is propped on a treadmill, or the workout is on your wrist. Workouts, settings, courses, and history sync across your devices with iCloud. Your Watch library updates automatically from iPhone. Widgets put today's session on your Home Screen, and Siri and Shortcuts can create or start one hands-free. RUNBUILDER PRO Building workouts, mapping courses, running them outdoors on iPhone, reviewing History, and saving to Apple Health are all free. No account required. RunBuilder Pro is a one-time purchase that unlocks: • Sending workouts to Garmin Connect and Wahoo • Starting workouts and courses from Apple Watch • Scheduling workouts to the built-in Apple Watch Workout app • Treadmill control, setting speed and incline for you as the workout runs • Engo smart glasses support • Race Plan, which builds a session around your target race and finish time • Nested repeats, for complex interval structures Note: Course elevation comes from a terrain model and is approximate, especially among tall buildings.

About

Volt

Features
Read full description

Volt turns your iPhone (and Apple Watch) into a smart control panel for your Bluetooth treadmill. Connect once, then control speed and incline, watch your live stats, and let Volt automatically adjust your pace for you — all while every workout is saved straight to Apple Health. Works with any treadmill that supports the Bluetooth FTMS (Fitness Machine Service) standard. LIVE TREADMILL CONTROL - Start, pause, resume, and stop your treadmill directly from your phone - Adjust speed and incline in real time, no need to touch the console - See live speed, distance, incline, elapsed time, and calories at a glance - Safety-first pairing: nearby treadmills are ranked by signal strength, and Volt warns you if a machine looks like it's already in use before you connect SMART WORKOUT MODES - Free Run — full manual control, your pace, your rules - Heart Rate Cruise Control — set a target heart rate and Volt automatically raises or lowers treadmill speed to keep you in your zone - HIIT Intervals — automated sprint/walk intervals with treadmill speed changes handled for you, so you can focus on the effort APPLE WATCH COMPANION - Mirrors your live speed, distance, incline, and heart rate to your wrist - Start and stop workouts from either device — they stay in sync - Optional haptic feedback for pace changes and interval transitions - Built for Always-On Display, so your stats stay sharp and readable without draining your battery APPLE HEALTH INTEGRATION - Every completed workout is saved to Health automatically — duration, distance, calories, and heart rate - Works whether or not you're wearing your Apple Watch: Volt saves the workout from your phone if your watch isn't paired for the session - Detailed per-second telemetry means your workout history shows real speed and heart-rate charts, not just a summary DYNAMIC ISLAND & LIVE ACTIVITY - Track your run from your iPhone's Lock Screen or the Dynamic Island without opening the app - Live speed, distance, and elapsed time, updated as you move WORKOUT HISTORY - Every past workout in one place, with distance, duration, calories, and average pace - Tap into any workout for a full speed, incline, and heart-rate breakdown over time MADE FOR RUNNERS AND WALKERS - Personalize calorie estimates with your own body weight - Available in English and Hungarian - A clean, distraction-free dashboard designed to be read at a glance, whether you're sprinting or walking the dog on your $200 basement treadmill Volt doesn't try to be a full fitness platform — it does one thing well: make your Bluetooth treadmill smarter, safer to control, and fully connected to the Health app you already use.

Screenshots

RunBuilder4 screens
Volt4 screens

Verdict

The call

The clearest difference is update cadence: Volt at every 5 days against RunBuilder's monthly. Volt also leads on iOS requirement (18.0 vs 26.0). 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. RunBuilder sells 1 one-off in-app purchase and Volt sells 1 in-app purchase, starting at $6.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

RunBuilder ships an update monthly, Volt every 5 days. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
RunBuilder versus Volt: the parameters behind the verdict, then further details
ParameterRunBuilderVolt
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS26.018.0 — better
Further details — not scored
Size17 MB7 MB
Age rating4+12+
DeveloperLandWare, LLCDaniel Kiss

In-app purchases

1 purchases

RunBuilder

One-time1
  • RunBuilder Pro$14.99
1 purchases

Volt

Subscriptions1
  • Volt Premium7 Days trial$6.991 Year

Questions

Is RunBuilder free?
RunBuilder is free to download, with in-app purchases available.
Is Volt free?
Volt is free to download, with in-app purchases available.
Do RunBuilder or Volt have ads?
Neither RunBuilder nor Volt shows ads.
Which is updated more often, RunBuilder or Volt?
RunBuilder ships an update monthly, and Volt every 5 days. Most recently, RunBuilder was updated on October 11, 2026 and Volt on October 1, 2026.

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