Z vs Smart Barter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Z
Generate audio frequencies for personal wellness and experimental use. Explore over 1300 sequences for frequency-based practices on your mobile device. This app is for wellness exploration and is not a medical device.
- Rife frequency generator
- Over 1300 sequences
- Audio frequency generation
- Wellness exploration
- Mobile and tablet use
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Z-App is a rife frequency generator designed to generate audio frequencies for wellness. With over 1300 sequences, it allows users to explore frequency-based wellness practices right on their phone or tablet. Disclaimer: Z-App is intended for personal wellness and experimental use only. It is not intended to diagnose, treat, cure, or prevent any medical condition. The frequency lists provided are based on anecdotal and alternative wellness traditions and are not supported by medical evidence. Always consult a healthcare professional before using the app, especially if you have any health concerns. This app should not be used as a substitute for professional medical advice or treatment. Use of the app is at your own discretion.
Smart Barter
A peer-to-peer marketplace to trade goods, skills, equipment, and experiences locally or nationally. List items, find what you need, and negotiate directly with other users. Offers four listing types: Goods, Equipment Rental, Skills, and Experiences.
- Peer-to-peer trading marketplace
- Trade goods, skills, equipment, experiences
- Local and national trading options
- Four listing types: Goods, Equipment Rental, Skills, Experiences
- Direct user negotiation and exchange
- Community trust through reviews and reporting
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Smart Barter is a free peer-to-peer marketplace where you can trade goods, skills, equipment, and experiences with people in your area or across the country. List what you have. Find what you need. Connect and negotiate directly with other users. No fees, no middleman. HOW IT WORKS List what you have in under two minutes. Choose from four listing types: Goods, Equipment Rental, Skills, or Experiences. Add photos, a description, and choose local or shipping. Browse listings near you or search by category. When you find something you want, send a trade proposal. The other person can accept, decline, or counter. Once you both agree, coordinate your exchange directly. FOUR WAYS TO TRADE Goods - Trade physical items permanently. Swap what you don't need for what you do. Equipment Rental - Lend tools, gear, or equipment for an agreed time period. Great for things you only need temporarily. Skills - Offer services like repairs, tutoring, photography, design work, or anything you're good at. Experiences - Share guided activities, training sessions, consultations, or access to property and land. BUILT FOR THE COMMUNITY Leave reviews after every exchange to build trust. Report inappropriate content to keep the community safe. Block users you don't want to interact with. WEEKLY GIVEAWAY Invite friends and earn entries into the Weekly Giveaway. When someone signs up with your referral code and completes their profile, you both get an entry. The more friends you refer, the more chances to win. PREMIUM (OPTIONAL) Everything you need to trade is free. Premium is an optional upgrade starting at $2.50/month with a 7-day free trial. Premium perks include: - Ad-free experience - Boosted listings in search and discovery - See who viewed your listings - List in any city, not just your home area - Save favorite listings - Up to 6 profile links instead of 1 Free features will never become Premium-only. Trading, messaging, posting listings, leaving reviews, and the referral program are free forever. DOWNLOAD NOW Join Smart Barter and start trading today. List your first item in under two minutes. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Z at none against Smart Barter's 2. Z also leads on ratings volume (433 vs 6) and rating (4.8 vs 4.5). Smart Barter's advantage is update cadence (every 9 days vs every 2 months). On price, ads, 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
Both are free to download. Smart Barter sells 2 in-app purchases, starting at $3.99 per month. Z asks for nothing beyond the download.
Z holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Z has 433 ratings behind it against 6, so its average is the more settled of the two.
Z ships an update every 2 months, Smart Barter every 9 days. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.
| Parameter | Z | Smart Barter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (433 ratings) — better | 4.5 (6 ratings) |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 433 — better | 6 |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 17 MB | 54 MB |
| Age rating | 17+ | 12+ |
| Developer | Allt Hitt ehf | Smart Barter LLC |
Customer experience
Z
Smart Barter
Bugs and requests
Z
Reported bugs
5 issues- Freezing during session
- Stopping playback when interrupted
- Compatibility issues with newer OS
- Lack of TMJ frequency
- Unexpected volume adjustments
Requested features
6 requests- Sawtooth tone
- Multiple frequencies
- Play controls
- Dark mode
- Back button
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- Users manual
Smart Barter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Z
No in-app purchases
Smart Barter
- Monthly Premium7 Days trial$3.991 Month
- Premium Yearly7 Days trial$29.991 Year
