MobileMMS vs Tri
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MobileMMS
Access work order details and supporting information directly in the field. Streamline task completion on-site and collect only necessary data, all without significant cost.
- Field work order management
- Access supporting information
- On-site task completion
- Data collection
- Cost-effective solution
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You should have your work order information with you in the field where you need it. You should have supporting information at your fingertips. You should know where you need to be and where you go next. You should quickly complete your work order when you do the work not when you get back to the office. You should collect only the information that you need. And, above all, you shouldn’t have to spend a fortune to do it. We make all of this possible with MobileMMS.
Tri
This app provides continuing education and professional development for water and wastewater professionals. It offers access to workshops, technical sessions, and tours, with affordable registration fees for extensive learning opportunities.
- Continuing education for professionals
- Workshops and technical sessions
- Industry tours
- Professional development
- Affordable registration
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Since 1985, the Tri-State Seminar, LLC (TSS) has been providing affordable, high-quality education to water and wastewater professionals from the western United States through our annual three-day seminar. The seminar is designed to provide continuing education, professional development, and technology transfer to support the mission and vision of our Member Associations; AZ Water Association (AZ Water), California Water Environment Association (CWEA), and the Nevada Water Environment Association (NWEA). In 2019, more than 3,300 attendees joined us from 20 states and 3 countries to attend more than a dozen workshops, three different tours, and over 200 classes and engaged with over 300 exhibitors. While we did not host an event in 2020 due to the pandemic, in 2021, we managed to host a successful scaled-back event with over 2,800 attendees (even with our masks on!). In 2022, we were officially back from pandemic pandemonium! We hosted almost 3,600 attendees and brought back some tours alongside our workshops. This year, we have more than 200 technical sessions scheduled and are offering a record number (13) of single and multi-day workshops! Tours to the Hoover Dam and Venetian Hotel have resumed, and we have a great local wastewater treatment plant tour scheduled as well. TSS strives to give you and your employer the very best Bang for Your Buck! Over the three-day event, we provide up to 21 contact hours to our attendees and with a registration fee of $99, that means you and your employer reap the rewards of your continued training at less than $4.75 per hour! This year, with split lunch schedules, enterprising individuals can get up to 8 technical sessions per day for the same low price of $99 (less than $4.15 per hour)! Where else in our highly specialized industry can you find high-quality training at this rock bottom price?
Screenshots
Verdict
The clearest difference is rating: MobileMMS at 5.0 against Tri's 4.0. MobileMMS also leads on update cadence (monthly vs every 6 months) and iOS requirement (15.0 vs 17.0). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
MobileMMS holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
MobileMMS ships an update monthly, Tri every 6 months. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.
| Parameter | MobileMMS | Tri |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Monthly — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 283 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Websoft Developers, Inc. | Tri-State Seminar, LLC |
Customer experience
MobileMMS
Tri
In-app purchases
MobileMMS
No in-app purchases
Tri
No in-app purchases









