Comparison

Weekly Challenge Roll vs SPECTRAL

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

Head to head
About

Weekly Challenge Roll

Features
Read full description

Challenge Roll is a simple and fun way to discover random challenges every week and share them with friends. Tap Roll to receive a surprise challenge. It could be a fitness task, a social dare, or something completely unexpected. Each challenge adds a bit of fun and spontaneity to your week. You can also create your own custom challenges and send them to friends. Import challenges from others and see what everyone comes up with. Challenge Roll is perfect for friends, groups, or anyone looking for something new to try each week. Features • Roll a new random challenge every week • Create and customize your own challenges • Share challenges with friends instantly • Import challenges sent by others • View previously rolled challenges in your history Use Challenge Roll during hangouts, friendly competitions, or whenever you want to add something unexpected to your week. Roll a challenge. Share it with friends. Try something new.

About

SPECTRAL

Transform your device into a paranormal investigation tool. Utilize real sensors to detect electromagnetic fields, capture spectral evidence with advanced cameras, and communicate with potential entities using a spirit box. Explore haunted locations and record your findings.

Highlights
  • Real magnetometer, motion, and microphone sensors
  • SLS skeletal camera for figure detection
  • EMF radar and sensor readings
  • Spirit box with multiple voice banks
  • EVP recorder with anomaly tagging
  • Seance board for communication
  • Multiple vision filters (Night Vision, Thermal, etc.)
  • Record and share investigation videos
Features
Read full description

SPECTRAL turns your iPhone into a ghost hunting kit: EMF radar, spirit box, SLS camera, EVP recorder and séance board in one app. It reads your phone's REAL magnetometer, motion sensors and microphone and turns them into atmospheric investigation tools. SLS CAMERA Maps human-shaped figures onto your camera feed in real time. Sometimes it finds you. Sometimes it finds something smaller in the corner that walks away on its own. Skeletons are saved into your photos and videos. EMF RADAR Live readings from your phone's magnetometer on a signal graph. The meter climbs as fields shift and blips appear on the radar. Temperature, voltage and frequency readouts track anomalies. SPIRIT BOX 6 channels, each with its own voice and word bank: STANDARD, DEMON, CHILD SPIRIT, SOLDIER'S ECHO, SÉANCE and ANCIENT. Speak out loud and entities answer when they hear you. Capture and share any word the instant it comes through. EVP RECORDER Record sessions from the room around you. Peaks are tagged as anomalies automatically, so you can jump to the moment something answered. SÉANCE BOARD Ask a question aloud and watch the planchette spell out the reply, letter by letter. VISION CAMERA Seven modes, including Green Glow, Heat Map Colors, Blacklight Glow, Ectoplasm, Shadow Veil and Specter Mode. Entities manifest without warning and orbs drift through frame. Every photo gets an entity type, threat level and confidence score. RECORD & SHARE Film your hunt with overlays, skeletons and orbs and share it to your feed. Standard clips run 30 seconds with a watermark; PRO records up to 3 minutes without one. INVESTIGATIONS 30+ case files in haunted places: abandoned asylums, forgotten chapels, sunken parishes, lighthouses. Each has a backstory, zones to sweep and entities to identify. A new case rotates in daily and one stays open to everyone each week. Close a case to get an animated Case Closed card. EVIDENCE JOURNAL Every capture is archived and classified. Climb 4 investigator ranks, keep your daily streak, complete daily missions and unlock radar themes in the Season Pass. Halloween, full moons and the 3 AM witching hour intensify activity. SPECTRAL PRO Every channel, filter and case, the custom case builder, 3-minute video without a watermark, longer recording sessions, Deadwave mode, audio effects, entity forensics, sensor calibration and no ads. Monthly, yearly or a one-time Lifetime purchase. Monthly and yearly Pro are auto-renewing subscriptions. Payment is charged to your Apple ID account at confirmation of purchase. A subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. Manage or cancel subscriptions in your Apple ID account settings. Lifetime is a one-time purchase and does not renew. Terms of Use (EULA): https://peerware.site/spectral-terms Privacy Policy: https://peerware.site/spectral-privacy-policy WARNING Eerie audio, sudden visual effects and atmospheric horror. Not recommended for young children or anyone sensitive to jump scares. DISCLAIMER SPECTRAL is an entertainment app. It reads real device sensors, but readings are interpreted for atmospheric effect and do not detect actual paranormal activity. We make no scientific claims about ghosts or spirit communication.

Screenshots

Weekly Challenge Roll4 screens
SPECTRAL4 screens

Verdict

The call

The clearest difference is price: SPECTRAL at Free against Weekly Challenge Roll's $2.99. SPECTRAL also leads on update cadence (every 5 days vs every 3 months). Weekly Challenge Roll's advantage is in-app purchases (none vs 12) and ads (none vs shown). On device support and iOS requirement 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

SPECTRAL is free to download; Weekly Challenge Roll costs $2.99 up front. SPECTRAL sells 12 in-app purchases, starting at $4.99 per month. Weekly Challenge Roll asks for nothing beyond the download.

UpkeepUpdate frequency

Weekly Challenge Roll ships an update every 3 months, SPECTRAL every 5 days. Both last shipped on October 25, 2026.

Scorecard4 real differences · 5 level
Weekly Challenge Roll versus SPECTRAL: the parameters behind the verdict, then further details
ParameterWeekly Challenge RollSPECTRAL
Price$2.99Free — better
Rating—4.8 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size35 MB54 MB
Age rating4+9+
DeveloperJelmer van NussPeerware

In-app purchases

None

Weekly Challenge Roll

No in-app purchases

12 purchases

SPECTRAL

Subscriptions2
  • Spectral Pro Monthly$4.991 Month
  • Spectral Pro Annual$19.991 Year
One-time10
  • Shadow & Specter Filter Pack$0.99
  • Séance Channel$0.99
  • Ecto Detector Filter$0.99
Show 7 more
  • Ancient Spirit Pack$0.99
  • Child Spirit Channel$0.99
  • Demon Channel$0.99
  • Soldier's Echo Channel$0.99
  • UV Spectrum Filter$0.99
  • Season Pass Premium$2.99
  • Spectral Pro Lifetime$19.99

Questions

Is Weekly Challenge Roll free?
Weekly Challenge Roll costs $2.99, with no in-app purchases.
Is SPECTRAL free?
SPECTRAL is free to download, with in-app purchases available.
Do Weekly Challenge Roll or SPECTRAL have ads?
SPECTRAL shows ads; Weekly Challenge Roll does not.
Which is updated more often, Weekly Challenge Roll or SPECTRAL?
Weekly Challenge Roll ships an update every 3 months, and SPECTRAL every 5 days. Most recently, Weekly Challenge Roll was updated on October 25, 2026 and SPECTRAL on October 25, 2026.

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